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        xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">
      <url>
            <loc>http://www.mathexpression.com/2d-rotational-symmetry.html</loc>
            <lastmod>2008-06-11T09:19:42-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c401-letter-s.png</image:loc>
              <image:caption>letter S</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c401-flower.png</image:loc>
              <image:caption>flower with 5 petals</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c401-snow-flake.png</image:loc>
              <image:caption>snow flake</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c401-moon.png</image:loc>
              <image:caption>moon picture</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/360-degree-angle.html</loc>
            <lastmod>2011-10-19T03:10:31-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/full-angle-examples.png</image:loc>
              <image:caption>examples on full angle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/acute-angle-practice.html</loc>
            <lastmod>2009-11-26T03:51:31-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/obtuse-angle.png</image:loc>
              <image:caption>Angle IV is not an acute angle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/angle-60-degrees.png</image:loc>
              <image:caption>Angle I is an acute angle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/acute-angle-ii.png</image:loc>
              <image:caption>Angle II is an acute angle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/identify-acute-angles.png</image:loc>
              <image:caption>identify all the acute angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/not-acute-angle.png</image:loc>
              <image:caption>Angle III is not an acute angle</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/acute-angles-and-right-angle.html</loc>
            <lastmod>2011-10-19T03:10:26-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/right-angle.png</image:loc>
              <image:caption>example on right angle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/acute-angles-eg.png</image:loc>
              <image:caption>examples on acute angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/acute-right-angle.png</image:loc>
              <image:caption>acute angle and right angle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/acute-triangle.html</loc>
            <lastmod>2011-10-19T03:42:02-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/internal-angle-less-90.png</image:loc>
              <image:caption>acute triangle with all internal angles less than 90 degrees</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/two-acute-triangles.png</image:loc>
              <image:caption>examples on acute triangles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/not-acute-triangle.png</image:loc>
              <image:caption>examples of not acute triangles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/acute-triangle-pic.png</image:loc>
              <image:caption>acute triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/acute-triangle-practice.html</loc>
            <lastmod>2010-04-14T20:52:51-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/triangle-iii.png</image:loc>
              <image:caption>Triangle III is not an acute triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/triangle-ii.png</image:loc>
              <image:caption>Triangle II is not an acute triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/find-acute-triangles.png</image:loc>
              <image:caption>identify all the acute triangles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/triangle-iv.png</image:loc>
              <image:caption>Triangle IV is an acute triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/triangle-i.png</image:loc>
              <image:caption>Triangle I is an acute triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/adding-fractions.html</loc>
            <lastmod>2011-10-18T23:33:30-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c504-adding-fraction.png</image:loc>
              <image:caption>Add these fractions</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c504-multiply-numerator-1.png</image:loc>
              <image:caption>Multiply numerator with denominator</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c504-adding-like-fractions.png</image:loc>
              <image:caption>Add both the numerator together</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-fractions.png</image:loc>
              <image:caption>Adding fractions with like denominators</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c504-multiply-numerator-2.png</image:loc>
              <image:caption>Multiply numerator with denominator</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c503-multiply-equivalent.png</image:loc>
              <image:caption>multiply to find equivalent fraction</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c504-multiply-denominators.png</image:loc>
              <image:caption>Multiply the denominators</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/adding-fractions-practice-q1.html</loc>
            <lastmod>2008-06-16T06:50:31-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-number-to-fraction.png</image:loc>
              <image:caption>Changing 3 into a fraction</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-multiply-fraction.png</image:loc>
              <image:caption>Multiply the numerator and denominator with 5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-add-both-fractions.png</image:loc>
              <image:caption>Adding 15/5 with 2/5 gives 17/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-convert-fraction.png</image:loc>
              <image:caption>convert the fraction 17/5 to 3 2/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-combine-no-fraction.png</image:loc>
              <image:caption>The shortcut to add these fractions</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-3-1-add-2-5.png</image:loc>
              <image:caption>Now, we have 3/1 with 2/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-fraction-3-2-over-5.png</image:loc>
              <image:caption>Adding 3 with 2/5 gives 3 2/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-practice-add-fraction.png</image:loc>
              <image:caption>Add 3 with 2/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/adding-fractions-practice-q2.html</loc>
            <lastmod>2008-06-16T06:55:41-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-add-unlike-fractions.png</image:loc>
              <image:caption>Add 2 1/3 with 3/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-add-fractions.png</image:loc>
              <image:caption>add 7/3 with 3/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-fraction-37-12.png</image:loc>
              <image:caption>Adding 28/12 with 9/12 gives 37/12</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-improper-to-mixed.png</image:loc>
              <image:caption>convert improper to mixed fraction</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-multiply-fractions.png</image:loc>
              <image:caption>Using equivalent fractions</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-mixed-to-improper.png</image:loc>
              <image:caption>converting mixed to improper fraction</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/adding-fractions-with-like-denominators.html</loc>
            <lastmod>2008-11-16T19:45:50-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c504-simplify-fraction.png</image:loc>
              <image:caption>Simplify the fraction</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c504-1-plus-5-over-8.png</image:loc>
              <image:caption>Add the fractions to get (1+5)/8</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c504-6-over-8.png</image:loc>
              <image:caption>The fraction 6/8</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c504-add-two-fractions.png</image:loc>
              <image:caption>Fractions have like denominators</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/adding-fractions-with-unlike-denominators.html</loc>
            <lastmod>2008-06-16T07:00:03-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c504-multiply-3-5.png</image:loc>
              <image:caption>Multiply to find equivalent fractions</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c504-convert-mixed-fraction.png</image:loc>
              <image:caption>convert improper to mixed fraction</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c504-fraction-19-over-15.png</image:loc>
              <image:caption>Add the fractions to get 19/15</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c504-2-3-over-3-5.png</image:loc>
              <image:caption>Fractions have unlike denominators</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/adding-fractions-worksheet-1.html</loc>
            <lastmod>2008-09-06T07:14:36-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-fractions-a6.png</image:loc>
              <image:caption>answer is 1 3/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-fractions-q5.png</image:loc>
              <image:caption>11/2 + 5/12</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-fractions-q7.png</image:loc>
              <image:caption>2 1/7 + 1 3/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-fractions-a7.png</image:loc>
              <image:caption>answer is 3 4/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math videos icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-fractions-a5.png</image:loc>
              <image:caption>answer is 1 1/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-fractions-q6.png</image:loc>
              <image:caption>1 1/5 + 2/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-fractions-a3.png</image:loc>
              <image:caption>answer is 5/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-fractions-q3.png</image:loc>
              <image:caption>4/7 + 1/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-fractions-q4.png</image:loc>
              <image:caption>4/7 + 5/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-fractions-q2.png</image:loc>
              <image:caption>1/8 + 3/8</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-fractions-a2.png</image:loc>
              <image:caption>answer is 1/2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-fractions-a4.png</image:loc>
              <image:caption>answer is 1 2/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-fractions-a1.png</image:loc>
              <image:caption>answer is 3/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-fractions-q1.png</image:loc>
              <image:caption>2/5 + 1/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Home</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/adding-fractions-worksheet-2.html</loc>
            <lastmod>2008-07-08T00:18:44-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-q5.png</image:loc>
              <image:caption>1/2 + 1/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-q7.png</image:loc>
              <image:caption>5/6 + 1/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-q3.png</image:loc>
              <image:caption>15/16 + 1/2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math videos icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-q4.png</image:loc>
              <image:caption>5/12 + 2/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-a7.png</image:loc>
              <image:caption>answer is 1 1/12</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-q2.png</image:loc>
              <image:caption>1/3 + 2/9</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-a6.png</image:loc>
              <image:caption>answer is 8/15</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-a1.png</image:loc>
              <image:caption>answer is 3/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-a2.png</image:loc>
              <image:caption>answer is 4/9</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-q8.png</image:loc>
              <image:caption>7/8 + 1/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-q6.png</image:loc>
              <image:caption>1/5 + 1/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-a5.png</image:loc>
              <image:caption>answer is 5/6</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-q1.png</image:loc>
              <image:caption>1/2 + 1/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-a4.png</image:loc>
              <image:caption>answer is 1 1/12</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-a8.png</image:loc>
              <image:caption>answer is 1 5/24</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-worksheet-2-a3.png</image:loc>
              <image:caption>answer is 1 7/16</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Home</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/adding-like-terms-practice-q1.html</loc>
            <lastmod>2008-08-03T23:00:56-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap25q1a-step2.png</image:loc>
              <image:caption>Add +3 and -1 to get +2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-terms-q1.png</image:loc>
              <image:caption>Algebra expression 5x +2 -2x -1</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap25q1a-step3.png</image:loc>
              <image:caption>Add 5x and -2x to get 3x</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap25q1a-step1.png</image:loc>
              <image:caption>Arrange the terms</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap25q1a-step4.png</image:loc>
              <image:caption>The simplified expression is 3x +2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/adding-like-terms-practice-q2.html</loc>
            <lastmod>2008-08-03T23:00:56-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap25q2a-step3.png</image:loc>
              <image:caption>Add terms 5x and -2x to get 3x</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap25q2a-step2.png</image:loc>
              <image:caption>Add terms +3x^2 and +5x^2 to get +8x^2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adding-terms-q2.png</image:loc>
              <image:caption>Algebra expression 5x + 3x^2 -2x -5x^2 +7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap25q2a-step4.png</image:loc>
              <image:caption>The simplified expression is 3x +8x^2 +7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap25q2a-step1.png</image:loc>
              <image:caption>Arrange the terms</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/adding-or-subtracting-expressions.html</loc>
            <lastmod>2009-08-06T05:01:23-04:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/adjacent-angles.html</loc>
            <lastmod>2011-10-19T03:25:57-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adjacent-angles-90.png</image:loc>
              <image:caption>complementary angles is a special case of adjacent angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adjacent-angles-pic.png</image:loc>
              <image:caption>adjacent angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adjacent-angle-condition.png</image:loc>
              <image:caption>condition for adjacent angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adjacent-angles-180.png</image:loc>
              <image:caption>supplementary angles is a special case of adjacent angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/adjacent-angles-practice.html</loc>
            <lastmod>2010-03-04T23:06:01-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/not-adjacent-angle-iii.png</image:loc>
              <image:caption>III is not adjacent angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/adjacent-i-ii.png</image:loc>
              <image:caption>I and II are adjacent angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/find-adjacent-angles.png</image:loc>
              <image:caption>identify all the adjacent angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/not-adjacent-angles-iv.png</image:loc>
              <image:caption>IV is not adjacent angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/algebra-library.html</loc>
            <lastmod>2010-06-07T09:31:20-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/fullstar_rating.gif</image:loc>
              <image:caption>star</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/halfstar_rating.gif</image:loc>
              <image:caption>star</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/algebra-story-problem-find-the-speed-of-the-current.html</loc>
            <lastmod>2010-03-05T23:14:43-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/algebra-variables.html</loc>
            <lastmod>2011-10-18T03:24:18-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/numberstovar.jpg</image:loc>
              <image:caption>Transition from number to variable</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/algebra-variables-practice-q1.html</loc>
            <lastmod>2008-08-03T23:00:56-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap21q1a-step2.png</image:loc>
              <image:caption>The third term 2z/p</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap21q1a-step4.png</image:loc>
              <image:caption>The fourth term 1/t</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap21q1a-step3.png</image:loc>
              <image:caption>The second term -3x</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap21q1a-step1.png</image:loc>
              <image:caption>The first term 1/5ab</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap21q1a-step5.png</image:loc>
              <image:caption>The fifth term 3pq</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap21q1.png</image:loc>
              <image:caption>Algebra terms</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/amount-of-interest-paid-in-30-days-on-one-year-term.html</loc>
            <lastmod>2010-01-19T02:33:06-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/angle-measurements-circle-graph.html</loc>
            <lastmod>2010-03-25T03:34:48-04:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/angle-relationships.html</loc>
            <lastmod>2010-03-22T05:27:35-04:00</lastmod>
            <priority>0.9</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/angle-relationships.png</image:loc>
              <image:caption>angle relationships</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/App_Contact_Geometry_Volume-thankyou.html</loc>
            <lastmod>2011-01-06T23:52:01-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/App_Contact-thankyou.html</loc>
            <lastmod>2010-10-10T22:47:16-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/area-of-a-circle.html</loc>
            <lastmod>2011-10-19T01:26:28-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/circle-with-radius-r.png</image:loc>
              <image:caption>a circle with the radius r</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/a-circle.png</image:loc>
              <image:caption>a circle</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/area-of-a-parallelogram.html</loc>
            <lastmod>2011-10-19T01:26:28-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/a-parallelogram.png</image:loc>
              <image:caption>a parallelogram</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/parallelogram-b-h.png</image:loc>
              <image:caption>a parallelogram with the base b and height h. Its opposite sides are equal in length.</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/parallelogram-sides.png</image:loc>
              <image:caption>a parallelogram has 2 pairs of parallel sides</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/area-of-a-rectangle.html</loc>
            <lastmod>2011-10-19T01:26:27-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/rectangle-lw.png</image:loc>
              <image:caption>a rectangle with the length l and width w</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/plain-rectangle.png</image:loc>
              <image:caption>a rectangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/area-of-a-square.html</loc>
            <lastmod>2011-10-19T01:26:27-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/plain-square.png</image:loc>
              <image:caption>a square</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/square.png</image:loc>
              <image:caption>a square with all sides of length L</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/area-of-a-trapezoid.html</loc>
            <lastmod>2011-10-19T01:26:29-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/a-trapezoid.png</image:loc>
              <image:caption>a trapezoid with 2 parallel sides</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/trapezoid-area-formula.png</image:loc>
              <image:caption>area of a trapezoid formula</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/trapezoid-with-label.png</image:loc>
              <image:caption>a trapezoid with the height h and 2 parallel sides, a and b.</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/trapezoid.png</image:loc>
              <image:caption>a trapezoid</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/area-of-a-triangle.html</loc>
            <lastmod>2011-10-19T01:26:28-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/acute-triangle.png</image:loc>
              <image:caption>an acute triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/triangle-base-height.png</image:loc>
              <image:caption>a triangle with base b and height h</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/obtuse-triangle.png</image:loc>
              <image:caption>an obtuse triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/triangle-area-formula.png</image:loc>
              <image:caption>area of a triangle formula</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/right-triangle.png</image:loc>
              <image:caption>a right triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/a-triangle.png</image:loc>
              <image:caption>a triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/area-word-problem-circles-and-leaves.html</loc>
            <lastmod>2011-02-28T03:51:49-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/basic-algebra.html</loc>
            <lastmod>2009-12-17T01:27:56-05:00</lastmod>
            <priority>0.9</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/basic-algebra-x-y.png</image:loc>
              <image:caption>Basic Algebra</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/basic-algebra-formulas.html</loc>
            <lastmod>2011-10-24T04:48:48-04:00</lastmod>
            <priority>0.9</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/n-term-geometric.png</image:loc>
              <image:caption>nth term, Tn=ar^(n-1)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/geometric-progression.png</image:loc>
              <image:caption>geometric progression, a + ar + ar^2 + ar^3 +...</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/sum-arithmetic.png</image:loc>
              <image:caption>Sum of the first n term, Sn = n/2[2a + (n-1)d]</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/nth-term-arithmetic.png</image:loc>
              <image:caption>The n term, Tn = a+(n-1)d</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/sum-infinity-geometric.png</image:loc>
              <image:caption>Sum to infinity, a/(1-r)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/a-plus-b-cube.png</image:loc>
              <image:caption>Expanded (a+b)^3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/a-minus-b-square.png</image:loc>
              <image:caption>Expanded (a-b)^2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/a-minus-b-cube.png</image:loc>
              <image:caption>Expanded (a-b)^3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/diff-of-squares.png</image:loc>
              <image:caption>difference of squares</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/sum-of-cubes.png</image:loc>
              <image:caption>sum of cubes</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/arithmetic-series.png</image:loc>
              <image:caption>arithmetic progression: a+(a+d)+(a+2d)+(a+3d)+...</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmallorange.png</image:loc>
              <image:caption>Quick notes icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/roots-of-quad-eqn.png</image:loc>
              <image:caption>roots of quadratic equation</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/sum-geometric.png</image:loc>
              <image:caption>sum of the first n term, Sn = [a(1-r^n)]/[1-r]</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmallgreen.png</image:loc>
              <image:caption>Quick notes icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/quadratic-equation.png</image:loc>
              <image:caption>quadratic equation: ax^2 +bx +c = 0</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/a-plus-b-square.png</image:loc>
              <image:caption>Expanded (a+b)^2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmallyellow.png</image:loc>
              <image:caption>Quick notes icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/diff-of-cubes.png</image:loc>
              <image:caption>difference of cubes</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/basics-on-drawing-a-graph.html</loc>
            <lastmod>2010-11-25T02:24:40-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/calculate-area.html</loc>
            <lastmod>2009-12-30T03:08:00-05:00</lastmod>
            <priority>0.9</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/two-dimension-figures.png</image:loc>
              <image:caption>Basic 2D Figures: square, rectangle, circle, parallelogram, triangle and trapezoid</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/calculate-compound-interest.html</loc>
            <lastmod>2011-10-19T03:00:12-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/cmp-interest-fml-2.png</image:loc>
              <image:caption>compound interest formula</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/cmp-interest-fml.png</image:loc>
              <image:caption>compound interest formula with labels</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/calculate-delivery-time.html</loc>
            <lastmod>2010-11-26T04:13:13-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/calculate-delivery-time-comments.html</loc>
            <lastmod>2010-11-26T04:13:13-05:00</lastmod>
            <priority>0.3</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/calculate-maturity-value-for-a-simple-interest-account.html</loc>
            <lastmod>2009-08-06T04:34:28-04:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/calculate-simple-interest.html</loc>
            <lastmod>2011-10-19T03:00:17-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/simple-interest-i-prt.png</image:loc>
              <image:caption>simple interest formula</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/simple-interest-picture.png</image:loc>
              <image:caption>simple interest picture</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/calculate-the-daily-compounding-interest-of-a-1575-loan.html</loc>
            <lastmod>2010-01-20T01:22:18-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/calculate-the-daily-compounding-interest-of-a-1575-loan-comments.html</loc>
            <lastmod>2010-01-20T01:22:18-05:00</lastmod>
            <priority>0.3</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/calculate-the-number-of-tiles.html</loc>
            <lastmod>2010-11-30T07:38:18-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/cartesian-plane.html</loc>
            <lastmod>2009-01-21T05:36:38-05:00</lastmod>
            <priority>0.9</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/cartesian-plane-point.png</image:loc>
              <image:caption>Cartesian Plane (Coordinate Plane) and a point</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/changing-nautical-miles-to-speed-in-meters.html</loc>
            <lastmod>2010-11-25T03:10:54-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/circle-practice.html</loc>
            <lastmod>2010-06-21T08:31:57-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/circle-area-formula.png</image:loc>
              <image:caption>formula for the area of a circle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calculate-circle-area.png</image:loc>
              <image:caption>Calculating the area of a circle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/circle-radius-3cm.png</image:loc>
              <image:caption>a circle with radius 5cm</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/circle-practice-2.html</loc>
            <lastmod>2010-06-21T08:31:55-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/circle-radius-r.png</image:loc>
              <image:caption>a circle with the radius r</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/circle-area-formula.png</image:loc>
              <image:caption>formula for the area of a circle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calc-radius-circle.png</image:loc>
              <image:caption>calculating the radius of a circle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/circle-radius-10cm.png</image:loc>
              <image:caption>square root of 100 is 10</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calc-radius-circle-2.png</image:loc>
              <image:caption>dividing both sides with 3.14</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/circle-practice-3.html</loc>
            <lastmod>2010-06-21T08:31:56-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calculate-circumference.png</image:loc>
              <image:caption>Calculating the circumference of a circle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/circumference-circle.png</image:loc>
              <image:caption>formula for the circumference of a circle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/sphere-radius-8cm.png</image:loc>
              <image:caption>a circle with radius of 8cm</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/circle-practice-4.html</loc>
            <lastmod>2010-06-21T08:31:56-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/circle-diameter-d.png</image:loc>
              <image:caption>a circle with the diameter d</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calc-diameter-circle-2.png</image:loc>
              <image:caption>dividing both sides with 3.14</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/circumference-circle-2.png</image:loc>
              <image:caption>formula for the circumference of a circle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calc-diameter-circle.png</image:loc>
              <image:caption>calculating the radius of a circle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/circumference-of-a-circle.html</loc>
            <lastmod>2011-10-19T02:39:50-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/circle-diameter-d.png</image:loc>
              <image:caption>a circle with the diameter d</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/green-circle-radius-r.png</image:loc>
              <image:caption>a circle with the radius r</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/a-green-circle.png</image:loc>
              <image:caption>a circle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/combining-like-terms.html</loc>
            <lastmod>2011-10-18T03:34:36-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/combining-like-terms.jpg</image:loc>
              <image:caption>Transition from number to variable</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/complementary-angles.html</loc>
            <lastmod>2011-10-19T03:25:58-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/complementary-angle-pic.png</image:loc>
              <image:caption>complementary angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/complimentary-angles-eg.png</image:loc>
              <image:caption>examples of complementary angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/complementary-angles-practice.html</loc>
            <lastmod>2010-02-11T03:14:00-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/complement-iii-iv.png</image:loc>
              <image:caption>III and IV are complementary angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/find-comp-angles.png</image:loc>
              <image:caption>identify all the complementary angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/compliment-i-ii.png</image:loc>
              <image:caption>I and II are complementary angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/compound-interest-calculated-monthly.html</loc>
            <lastmod>2010-01-19T03:18:18-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/compound-interest-formula.html</loc>
            <lastmod>2011-10-19T03:00:15-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/compound-interest.png</image:loc>
              <image:caption>compound interest picture</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/compound-int-formula.png</image:loc>
              <image:caption>compound interest formula</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/compound-interest-practice.html</loc>
            <lastmod>2009-06-05T03:45:05-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calc-2nd-interest.png</image:loc>
              <image:caption>The interest after the 2nd year is $220</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/first-year-2200.png</image:loc>
              <image:caption>Amount owed after the 1st year is $2200</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calc-1st-interest.png</image:loc>
              <image:caption>using the simple interest formula</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/compound-interest-practice-2.html</loc>
            <lastmod>2009-09-01T02:42:19-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/compound-int-formula.png</image:loc>
              <image:caption>compound interest formula</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calc-compound-formula.png</image:loc>
              <image:caption>using the compound interest formula</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/compound-interest-practice-3.html</loc>
            <lastmod>2009-06-23T05:29:14-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/cmp-interest-fml-2.png</image:loc>
              <image:caption>compound interest formula</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/total-amt-3600.png</image:loc>
              <image:caption>using the compound interest formula</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/compound-interest-practice-4.html</loc>
            <lastmod>2009-06-23T05:30:26-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/divide-by-1331.png</image:loc>
              <image:caption>dividing both sides with 1.331 to find P</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/cmp-interest-fml-2.png</image:loc>
              <image:caption>compound interest formula</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calc-cmp-principal.png</image:loc>
              <image:caption>using the compound interest formula to find the principal</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/cone-practice.html</loc>
            <lastmod>2010-06-21T08:31:57-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calculate-cone-volume.png</image:loc>
              <image:caption>Calculating the volume of a cone</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/cone-height-radius.png</image:loc>
              <image:caption>cone with height 10cm and base radius 9cm</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/cone-volume-formula.png</image:loc>
              <image:caption>formula for the volume of a cone</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/cone-practice-2.html</loc>
            <lastmod>2010-06-21T08:31:57-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calculate-cone-radius-3.png</image:loc>
              <image:caption>square root of 9 is 3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/find-base-radius-cone.png</image:loc>
              <image:caption>cone with height 7in and base radius r</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calculate-cone-radius-2.png</image:loc>
              <image:caption>dividing both sides of the equation with 6.28</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calculate-cone-radius.png</image:loc>
              <image:caption>substituting the values of V, Pi and h</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/congruent-angles.html</loc>
            <lastmod>2011-10-19T03:25:58-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/congruent-angle-55.png</image:loc>
              <image:caption>congruent angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/three-congruent-angles.png</image:loc>
              <image:caption>examples on congruent angles</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/congruent-angles-practice.html</loc>
            <lastmod>2010-01-18T23:13:26-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/identify-congruent-angles.png</image:loc>
              <image:caption>identify all the congruent angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/angle-ii-and-iv.png</image:loc>
              <image:caption>Angle II and IV are not congruent</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/angle-i-and-iii.png</image:loc>
              <image:caption>Angle I and III are congruent</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/Contact-thankyou.html</loc>
            <lastmod>2009-04-17T09:45:44-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/convert-cubic-inches-to-gallons.html</loc>
            <lastmod>2009-08-06T10:10:46-04:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/convert-decimal-to-fraction.html</loc>
            <lastmod>2011-10-18T23:45:56-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/simplify-divide-4.png</image:loc>
              <image:caption>simplifying this fraction</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/3-over-25.png</image:loc>
              <image:caption>0.12 in the form of fraction is 3/25</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/decimal-to-fraction-pic.png</image:loc>
              <image:caption>converting decimal to a fraction</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/12-over-100.png</image:loc>
              <image:caption>the fraction 12/100</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/decimal-multiply-100.png</image:loc>
              <image:caption>multiply 0.12 with 100 gives 12</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/convert-fraction-to-percent.html</loc>
            <lastmod>2009-04-17T10:17:26-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/3-8-multiply-100.png</image:loc>
              <image:caption>multiply 3/8 with 100</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/100-multiply-3.png</image:loc>
              <image:caption>100 multiply by 3 gives 300</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/300-divide-8.png</image:loc>
              <image:caption>300 divides by 8 gives 37.5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/coordinate-plane.html</loc>
            <lastmod>2011-10-18T04:39:02-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
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            <loc>http://www.mathexpression.com/coordinate-plane-math-practice-Q1.html</loc>
            <lastmod>2007-08-29T05:28:51-04:00</lastmod>
            <priority>0.6</priority>
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              <image:loc>http://www.mathexpression.com/image-files/leftimage.gif</image:loc>
              <image:caption>Navigation Bar</image:caption>
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            <loc>http://www.mathexpression.com/coordinate-plane-math-practice-Q2.html</loc>
            <lastmod>2007-08-29T05:29:03-04:00</lastmod>
            <priority>0.6</priority>
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            <loc>http://www.mathexpression.com/coordinate-plane-practice-q1.html</loc>
            <lastmod>2008-08-03T23:21:47-04:00</lastmod>
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            <lastmod>2008-08-03T23:21:47-04:00</lastmod>
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            <loc>http://www.mathexpression.com/coordinates.html</loc>
            <lastmod>2011-10-18T04:39:02-04:00</lastmod>
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              <image:caption>Coordinate of a point</image:caption>
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              <image:caption>Math video icon</image:caption>
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            <loc>http://www.mathexpression.com/coordinates-practice-q1.html</loc>
            <lastmod>2008-08-03T23:21:47-04:00</lastmod>
            <priority>0.6</priority>
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              <image:loc>http://www.mathexpression.com/image-files/chap12q1.jpg</image:loc>
              <image:caption>Coordinates of a point question picture</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/q12a1step3.jpg</image:loc>
              <image:caption>Coordinates of (-4.0,-3.0)</image:caption>
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            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/q12a1step2.jpg</image:loc>
              <image:caption>Coordinates of (2.0,3.0)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/q12a1step1.jpg</image:loc>
              <image:caption>x-coordinate is 2.0</image:caption>
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              <image:caption>Solution icon</image:caption>
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              <image:caption>XML RSS</image:caption>
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              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
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            <loc>http://www.mathexpression.com/coordinates-practice-q2.html</loc>
            <lastmod>2008-08-03T23:21:47-04:00</lastmod>
            <priority>0.6</priority>
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              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
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              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/quadrants2.jpg</image:loc>
              <image:caption>Quadrants Question picture</image:caption>
            </image:image>
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              <image:caption>Add to Google</image:caption>
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              <image:caption>All 5 coordinates picture</image:caption>
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      <url>
            <loc>http://www.mathexpression.com/cube-practice.html</loc>
            <lastmod>2008-09-15T06:58:24-04:00</lastmod>
            <priority>0.6</priority>
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              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
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              <image:caption>Answer icon</image:caption>
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              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
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              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
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            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/cube-3-cm.png</image:loc>
              <image:caption>Cube with the sides of length 3cm</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
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      <url>
            <loc>http://www.mathexpression.com/cube-practice-2.html</loc>
            <lastmod>2008-09-15T07:03:14-04:00</lastmod>
            <priority>0.6</priority>
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              <image:caption>Add to My MSN</image:caption>
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              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/cube-length-l.png</image:loc>
              <image:caption>cube with the sides of length L</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
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              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
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              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
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            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/volume-v-equals-64.png</image:loc>
              <image:caption>Calculating the length of the sides of a cube</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/l-equals-cube-root-64.png</image:loc>
              <image:caption>Length of the side is 4in</image:caption>
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              <image:caption>Add to Google</image:caption>
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            <loc>http://www.mathexpression.com/cylinder-practice.html</loc>
            <lastmod>2010-06-21T08:31:58-04:00</lastmod>
            <priority>0.6</priority>
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              <image:caption>Answer icon</image:caption>
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              <image:caption>Quesion icon</image:caption>
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            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/cylinder-practice-2.html</loc>
            <lastmod>2010-06-21T08:31:58-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/cal-cylinder-volume.png</image:loc>
              <image:caption>Calculating the height of the cylinder</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/find-height-of-cylinder.png</image:loc>
              <image:caption>Finding the height of the cylinder</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/find-cylinder-height.png</image:loc>
              <image:caption>cylinder with the radius 4in and height h</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/decimals-to-fractions.html</loc>
            <lastmod>2009-02-21T20:38:32-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mixed-fraction2-1-10.png</image:loc>
              <image:caption>mixed fraction, 2 1/10</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/convert-21-10-mixed.png</image:loc>
              <image:caption>converting 21/10 to a mixed fraction</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/21-divided-by-10.png</image:loc>
              <image:caption>the fraction, 21/10</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/2-point-1-multiply-10.png</image:loc>
              <image:caption>multiplying 2.1 with 10 gives 21</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/decimal-to-fraction.html</loc>
            <lastmod>2009-02-21T20:36:52-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fraction-2-over-20.png</image:loc>
              <image:caption>0.15 in the form of fraction is 3/20</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/simplify-fraction-12-100.png</image:loc>
              <image:caption>simplifying the fraction, 15/100</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/5-over-100.png</image:loc>
              <image:caption>the fraction, 15/100</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-100-with-decimal.png</image:loc>
              <image:caption>multiplying 0.15 with 100 gives 15</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/determine-the-number-of-realnumber-solutions.html</loc>
            <lastmod>2011-02-28T01:05:15-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/difference-between-an-equation-and-an-expression.html</loc>
            <lastmod>2009-08-06T04:51:28-04:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/divide-fractions-practice.html</loc>
            <lastmod>2008-07-24T07:11:27-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/after-fraction-conversion.png</image:loc>
              <image:caption>1 3/7 to 10/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/divide-these-fractions.png</image:loc>
              <image:caption>Divide fractions, 2/9 with 1 3/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mixed-fraction-convert.png</image:loc>
              <image:caption>convert improper fraction to mixed fraction</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answer-7-over-45.png</image:loc>
              <image:caption>the final answer, 7/45</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/division-to-multiply.png</image:loc>
              <image:caption>change the fraction division to fraction multiplication</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fraction-10-7.png</image:loc>
              <image:caption>improper fraction, 10/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/dividing-fractions.html</loc>
            <lastmod>2011-10-18T23:45:56-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/reciprocal-4-over-3.png</image:loc>
              <image:caption>swap 3 and 4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/divide-two-fractions.png</image:loc>
              <image:caption>divide the fractions, 5/7 with 3/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fraction-3-over-4.png</image:loc>
              <image:caption>find the reciprocal of 3/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions.png</image:loc>
              <image:caption>convert fraction division to fraction multiplication</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fraction-4-over-3.png</image:loc>
              <image:caption>reciprocal of 3/4 is 4/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/change-to-division.png</image:loc>
              <image:caption>changing to multiplication</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/divide-fractions-solution.png</image:loc>
              <image:caption>multiply the fractions</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/dividing-fractions-practice.html</loc>
            <lastmod>2008-07-20T05:43:14-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/divide-fractions-3-5-2-7.png</image:loc>
              <image:caption>Divide fractions, 3/5 with 2/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/division-to-multiplication.png</image:loc>
              <image:caption>change the division to multiplication</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/divide-fractions-solution.png</image:loc>
              <image:caption>Multiply the fractions, 3/5 with 7/2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/dividing-fractions-worksheet.html</loc>
            <lastmod>2008-07-25T05:10:54-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-a4.png</image:loc>
              <image:caption>answer is 10/21</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-a2.png</image:loc>
              <image:caption>answer is 9/10</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-a1.png</image:loc>
              <image:caption>answer is 2/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-q2.png</image:loc>
              <image:caption>3/5 ÷ 2/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-a8.png</image:loc>
              <image:caption>answer is 1/6</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math videos icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-q1.png</image:loc>
              <image:caption>1/3 ÷ 1/2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-q3.png</image:loc>
              <image:caption>1/5 ÷ 5/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-a5.png</image:loc>
              <image:caption>answer is 6/11</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-a6.png</image:loc>
              <image:caption>answer is 1 2/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-q4.png</image:loc>
              <image:caption>5/7 ÷ 3/2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-a7.png</image:loc>
              <image:caption>answer is 4 1/2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-q5.png</image:loc>
              <image:caption>9/11 ÷ 3/2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-q7.png</image:loc>
              <image:caption>3 ÷ 2/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-a3.png</image:loc>
              <image:caption>answer is 7/25</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-q8.png</image:loc>
              <image:caption>1/3 ÷ 2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Home</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws-q6.png</image:loc>
              <image:caption>3/4 ÷ 7/12</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/dividing-fractions-worksheet-2.html</loc>
            <lastmod>2008-07-25T05:14:03-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-q2.png</image:loc>
              <image:caption>1 2/3 ÷ 2/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-a2.png</image:loc>
              <image:caption>answer is 4 1/6</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-a6.png</image:loc>
              <image:caption>answer is 3/40</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-q1.png</image:loc>
              <image:caption>1 1/2 ÷ 1/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math videos icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-q8.png</image:loc>
              <image:caption>2 1/3 ÷ 1 1/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-q5.png</image:loc>
              <image:caption>1/6 ÷ 2 1/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-a1.png</image:loc>
              <image:caption>answer is 4 1/2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-a5.png</image:loc>
              <image:caption>answer is 1/14</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-a3.png</image:loc>
              <image:caption>answer is 2 7/10</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-a7.png</image:loc>
              <image:caption>answer is 9/10</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-q6.png</image:loc>
              <image:caption>1/3 ÷ 2 2/9</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-a4.png</image:loc>
              <image:caption>answer is 3/8</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-a8.png</image:loc>
              <image:caption>answer is 1 13/15</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-q4.png</image:loc>
              <image:caption>1/2 ÷ 1 1/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-q3.png</image:loc>
              <image:caption>2 1/4 ÷ 5/6</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/dividing-fractions-ws2-q7.png</image:loc>
              <image:caption>1 1/2 ÷ 1 2/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Home</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/effects-of-changing-the-slope-and-the-yintercept.html</loc>
            <lastmod>2010-02-23T04:26:23-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/equation-of-a-line.html</loc>
            <lastmod>2011-10-18T05:29:31-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/slope-intercept.png</image:loc>
              <image:caption>slope-intercept form of a line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/determine-line-equation.png</image:loc>
              <image:caption>Determine the equation of a line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/equation-of-a-line-parallel.html</loc>
            <lastmod>2011-10-18T05:29:30-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c193-lines-parallel-to-axes.png</image:loc>
              <image:caption>equation of parallel line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c192-line-parallel-x-axis.png</image:loc>
              <image:caption>equation of a line parallel to the x-axis</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c192-line-parallel-y-axis.png</image:loc>
              <image:caption>equation of a line parallel to the y-axis</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/equation-of-line.html</loc>
            <lastmod>2008-03-10T20:25:10-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/solve-for-y-intercept.png</image:loc>
              <image:caption>Finding the y-intercept</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/slope-point-one.png</image:loc>
              <image:caption>x-coordinate and y-coordinate of a point (3.0,-3.0)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/substituted-point.png</image:loc>
              <image:caption>Substitute x = -3 and y =1 into y=-2x/3 + b</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/slope-intercept.png</image:loc>
              <image:caption>slope-intercept form of a line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/slope-substitution.png</image:loc>
              <image:caption>Finding the slope using the Slope Formula</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/slope-point-two.png</image:loc>
              <image:caption>x-coordinate and y-coordinate of a point (-3.0,1.0)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/slope-formula.png</image:loc>
              <image:caption>slope formula</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equation-of-the-line.png</image:loc>
              <image:caption>Equation of a line with slope and y-intercept found</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/find-y-intercept.png</image:loc>
              <image:caption>Find the y-intercept in y=-2x/3 + b</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/equation-of-line-parallel.html</loc>
            <lastmod>2008-08-03T23:21:47-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c193-coordinate-point-4-2.png</image:loc>
              <image:caption>coordinates of a point (4,-2)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c193-parallel-line-y-axis.png</image:loc>
              <image:caption>a line parallel to the y-axis</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c193-parallel-line-x-axis.png</image:loc>
              <image:caption>a line parallel to the x-axis</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/equilateral-triangle.html</loc>
            <lastmod>2011-10-19T03:42:00-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equilateral-triangle-eg.png</image:loc>
              <image:caption>examples of equilateral triangles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equilateral-triangle.png</image:loc>
              <image:caption>equilateral triangle example</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equilateral-triangle-pic.png</image:loc>
              <image:caption>Each internal angle is 60 degrees</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/equilateral-triangle-practice.html</loc>
            <lastmod>2010-05-12T04:12:18-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/is-equilateral-triangle-iv.png</image:loc>
              <image:caption>Triangle IV is an equilateral triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/find-equilateral-triangle.png</image:loc>
              <image:caption>identify all the equilateral triangles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/is-equilateral-triangle-ii.png</image:loc>
              <image:caption>Triangle II is not an equilateral triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/is-equilateral-triangle-i.png</image:loc>
              <image:caption>Triangle I is an equilateral triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/is-equilateral-triangle-iii.png</image:loc>
              <image:caption>Triangle III is not an equilateral triangle</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/equivalent-fraction.html</loc>
            <lastmod>2008-06-11T09:10:46-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/equivalent-fractions.html</loc>
            <lastmod>2011-10-18T23:33:30-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c503-equivalent-fractions.png</image:loc>
              <image:caption>equivalent fractions</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c503-divide-equivalent.png</image:loc>
              <image:caption>Divide to find equivalent fraction</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c503-equivalent-fraction.png</image:loc>
              <image:caption>fractions that have the same value</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c503-multiply-equivalent.png</image:loc>
              <image:caption>multiply to find equivalent fraction</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/equivalent-fraction-worksheets.html</loc>
            <lastmod>2008-09-06T07:14:36-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-q2.png</image:loc>
              <image:caption>fraction 2/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-q3.png</image:loc>
              <image:caption>fraction 3/2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-a2.png</image:loc>
              <image:caption>answer is 4/6</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-q8.png</image:loc>
              <image:caption>fraction 23/12</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-q7.png</image:loc>
              <image:caption>fraction 11/12</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-q1.png</image:loc>
              <image:caption>fraction 1/2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-a6.png</image:loc>
              <image:caption>answer is 80/90</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math videos icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-q4.png</image:loc>
              <image:caption>fraction 3/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-a5.png</image:loc>
              <image:caption>answer is 15/21</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-a1.png</image:loc>
              <image:caption>answer is 2/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-q6.png</image:loc>
              <image:caption>fraction 8/9</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-q5.png</image:loc>
              <image:caption>fraction 5/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-a4.png</image:loc>
              <image:caption>answer is 9/15</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-a7.png</image:loc>
              <image:caption>answer is 33/36</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-a3.png</image:loc>
              <image:caption>answer is 6/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet-a8.png</image:loc>
              <image:caption>answer is 161/84</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Home</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/equivalent-fraction-worksheets-2.html</loc>
            <lastmod>2008-09-15T07:19:48-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-q2.png</image:loc>
              <image:caption>fraction 16/24</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-a6.png</image:loc>
              <image:caption>answer is 18/19</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-q1.png</image:loc>
              <image:caption>fraction 6/14</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-a5.png</image:loc>
              <image:caption>answer is 3 1/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-q6.png</image:loc>
              <image:caption>fraction 342/361</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math videos icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-q4.png</image:loc>
              <image:caption>fraction 26/8</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-q8.png</image:loc>
              <image:caption>fraction 2 3/15</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-a4.png</image:loc>
              <image:caption>answer is 3 1/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-a3.png</image:loc>
              <image:caption>answer is 9/13</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-a1.png</image:loc>
              <image:caption>answer is 3/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-a8.png</image:loc>
              <image:caption>answer is 2 1/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-a2.png</image:loc>
              <image:caption>answer is 2/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-q7.png</image:loc>
              <image:caption>fraction 2 2/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-q3.png</image:loc>
              <image:caption>fraction 36/52</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-a7.png</image:loc>
              <image:caption>answer is 5/2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/equivalent-worksheet2-q5.png</image:loc>
              <image:caption>fraction 52/16</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Home</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/evaluate-54521222.html</loc>
            <lastmod>2010-03-17T06:59:50-04:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/evaluate-an-expression-with-negative-exponents.html</loc>
            <lastmod>2010-11-26T00:28:46-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/evaluate-n6-when-n1.html</loc>
            <lastmod>2009-08-06T05:02:09-04:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/evaluate-the-expression-3z-3.html</loc>
            <lastmod>2009-08-06T04:54:49-04:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/evaluate-the-expression-ab-when-a5-and-b10.html</loc>
            <lastmod>2009-09-30T00:17:59-04:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/evaluating-expression.html</loc>
            <lastmod>2011-10-18T03:55:59-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/evaluating-expression.jpg</image:loc>
              <image:caption>Evaluating expression</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/evaluating-expressions-q1.html</loc>
            <lastmod>2008-08-03T23:21:48-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap24q1a-step3.png</image:loc>
              <image:caption>Substitute y with -3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap24q1.png</image:loc>
              <image:caption>Algebra expression 5x -7y</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap24q1a-step4.png</image:loc>
              <image:caption>Multiply -7 with -3 to get +21</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap24q1a-step1.png</image:loc>
              <image:caption>Substitute x with 2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap24q1a-step5.png</image:loc>
              <image:caption>Add 10 with 21. This gives 31.</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap24q1a-step2.png</image:loc>
              <image:caption>Multiply 5 with 2 to get 10</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/evaluating-expressions-q2.html</loc>
            <lastmod>2008-08-03T23:21:48-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap24q2a-step2.png</image:loc>
              <image:caption>(-3)^2 is equals to 9</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap24q2a-step5.png</image:loc>
              <image:caption>Multiply 45 with 2. This gives 90.</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap24q2a-step3.png</image:loc>
              <image:caption>Multiply 5 with 9. This gives 45.</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap24q2a-step4.png</image:loc>
              <image:caption>Substitute y with 2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap24q2a-step1.png</image:loc>
              <image:caption>Substitute x with -3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap24q2.png</image:loc>
              <image:caption>Algebra expression 5x^2y</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/expanding-brackets-quadratic-factors.html</loc>
            <lastmod>2009-08-06T04:55:20-04:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/exponent-law.html</loc>
            <lastmod>2011-10-17T04:29:07-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/second-law-of-exponent.png</image:loc>
              <image:caption>second law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/next-three-exponent-laws.png</image:loc>
              <image:caption>The next three exponent laws to demonstrate</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/first-law-of-exponent.png</image:loc>
              <image:caption>first law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/third-law-of-exponent.png</image:loc>
              <image:caption>third law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/exponent-law-practice.html</loc>
            <lastmod>2008-02-21T19:22:51-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/second-law-of-exponent.png</image:loc>
              <image:caption>second law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/sixth-law-of-exponent.png</image:loc>
              <image:caption>law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/first-law-of-exponent.png</image:loc>
              <image:caption>first law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fourth-law-of-exponent-why.png</image:loc>
              <image:caption>This exponent law doesn&#39;t seems to fit</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fourth-law-of-exponent.png</image:loc>
              <image:caption>law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fifth-law-of-exponent.png</image:loc>
              <image:caption>law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap31_2q1a-step3.png</image:loc>
              <image:caption>Newly formulated exponent law</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/third-law-of-exponent.png</image:loc>
              <image:caption>third law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/exponent-laws.html</loc>
            <lastmod>2011-10-13T01:35:53-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/first-three-exponents.png</image:loc>
              <image:caption>First three exponent laws to demonstrate</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/tips-base-exponent.png</image:loc>
              <image:caption>Definition of exponent and base</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/exponent-laws-examples.html</loc>
            <lastmod>2011-10-13T01:35:53-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/example-on-exponent-law.png</image:loc>
              <image:caption>third law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/exponent-laws-example.png</image:loc>
              <image:caption>Examples on using exponent laws</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fourth-law-of-exponent.png</image:loc>
              <image:caption>Exponent law shown in the previous lesson</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fifth-law-of-exponent.png</image:loc>
              <image:caption>zero exponent law</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/six-law-of-exponent.png</image:loc>
              <image:caption>Changing negative exponent to positive exponent</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/exponent-laws-practice.html</loc>
            <lastmod>2008-02-21T19:29:35-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/second-law-of-exponent.png</image:loc>
              <image:caption>second law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap31q1a-step7.png</image:loc>
              <image:caption>Multiply the exponents, 5 with 2 gives 6 to the power of 10</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap31q1a-step2.png</image:loc>
              <image:caption>Adding the exponents gives 6 to the power of 10</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap31q1a-step4.png</image:loc>
              <image:caption>Minus the exponents, 15 with 5 gives 6 to the power of 10</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/first-law-of-exponent.png</image:loc>
              <image:caption>first law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap31q1a-step1.png</image:loc>
              <image:caption>Application of the first law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap31q1a-step6.png</image:loc>
              <image:caption>Application of the third law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap31q1a-step3.png</image:loc>
              <image:caption>Application of the second law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap31q1a-step5.png</image:loc>
              <image:caption>The exponent laws require the same base</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/third-law-of-exponent.png</image:loc>
              <image:caption>third law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/exponent-laws-questions-q1.html</loc>
            <lastmod>2008-02-21T19:33:18-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
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              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap33q1a-step6.png</image:loc>
              <image:caption>4 minus 2 gives 2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/second-law-of-exponent.png</image:loc>
              <image:caption>second law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/sixth-law-of-exponent.png</image:loc>
              <image:caption>law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap33q1a-step3ii.png</image:loc>
              <image:caption>Applying the 3rd exponent law on (3^2)^2</image:caption>
            </image:image>
            <image:image>
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              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/first-law-of-exponent.png</image:loc>
              <image:caption>first law of exponents</image:caption>
            </image:image>
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            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap33q1.png</image:loc>
              <image:caption>Expression 9^2 multiply 3^(-2)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap33q1a-step2.png</image:loc>
              <image:caption>Replacing 9 with 3 to the power of 2</image:caption>
            </image:image>
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            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fourth-law-of-exponent.png</image:loc>
              <image:caption>law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap33q1a-step4.png</image:loc>
              <image:caption>2 multiply by 2 gives 4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fifth-law-of-exponent.png</image:loc>
              <image:caption>law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap33q1a-step5.png</image:loc>
              <image:caption>Applying first law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap33q1a-step1.png</image:loc>
              <image:caption>Both bases are not the same</image:caption>
            </image:image>
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              <image:caption>Next question</image:caption>
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            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/third-law-of-exponent.png</image:loc>
              <image:caption>third law of exponents</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/exponent-laws-questions-q2.html</loc>
            <lastmod>2008-10-26T00:06:15-04:00</lastmod>
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              <image:loc>http://www.mathexpression.com/image-files/chap33q2a-step7.png</image:loc>
              <image:caption>q^1 equals to q and s^0 equals 1</image:caption>
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              <image:caption>second law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap33q2a-step4.png</image:loc>
              <image:caption>Simplying to get 2q^3 s^6</image:caption>
            </image:image>
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              <image:loc>http://www.mathexpression.com/image-files/chap33q2a-step6.png</image:loc>
              <image:caption>The expression after applying the second law of exponents</image:caption>
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              <image:loc>http://www.mathexpression.com/image-files/first-law-of-exponent.png</image:loc>
              <image:caption>first law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap33q2a-step5.png</image:loc>
              <image:caption>The expression after simplifying the numerator and denominator</image:caption>
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              <image:caption>Applying the derived exponent law</image:caption>
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              <image:caption>law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fourth-law-of-exponent.png</image:loc>
              <image:caption>law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap33q2a-step1.png</image:loc>
              <image:caption>Applying the derived exponent law</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap33q2a-step2.png</image:loc>
              <image:caption>Simplying the expression to get 4 p^4 s^6</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap33q2a-step8.png</image:loc>
              <image:caption>The final expression is 3q</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fifth-law-of-exponent.png</image:loc>
              <image:caption>law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap33q2.png</image:loc>
              <image:caption>Expression to simplify</image:caption>
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              <image:caption>Previous</image:caption>
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              <image:loc>http://www.mathexpression.com/image-files/third-law-of-exponent.png</image:loc>
              <image:caption>third law of exponents</image:caption>
            </image:image>
      </url>
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            <loc>http://www.mathexpression.com/exponent-rules.html</loc>
            <lastmod>2009-12-17T03:31:35-05:00</lastmod>
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            <lastmod>2011-02-28T02:49:08-05:00</lastmod>
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            <lastmod>2011-02-28T02:49:08-05:00</lastmod>
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            <loc>http://www.mathexpression.com/factoring-numbers.html</loc>
            <lastmod>2010-01-19T22:54:03-05:00</lastmod>
            <priority>0.4</priority>
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            <loc>http://www.mathexpression.com/find-an-equation-for-a-line-given-the-slope-and-a-point.html</loc>
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            <loc>http://www.mathexpression.com/finding-perimeter.html</loc>
            <lastmod>2009-12-30T05:39:34-05:00</lastmod>
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            <loc>http://www.mathexpression.com/finding-the-area-of-a-rectangle.html</loc>
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            <priority>0.4</priority>
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            <lastmod>2010-02-09T04:02:15-05:00</lastmod>
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            <loc>http://www.mathexpression.com/finding-the-area-of-clock.html</loc>
            <lastmod>2010-11-25T04:04:34-05:00</lastmod>
            <priority>0.4</priority>
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            <loc>http://www.mathexpression.com/finding-the-exact-simple-interest.html</loc>
            <lastmod>2010-01-19T02:08:02-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/finding-the-slope-and-yintercept.html</loc>
            <lastmod>2009-08-06T04:44:41-04:00</lastmod>
            <priority>0.4</priority>
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            <loc>http://www.mathexpression.com/finding-the-slope-and-yintercept-comments.html</loc>
            <lastmod>2009-08-06T04:44:41-04:00</lastmod>
            <priority>0.3</priority>
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            <loc>http://www.mathexpression.com/finding-the-slope-of-the-line-8x-3y-9.html</loc>
            <lastmod>2010-02-05T02:52:24-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/finding-the-volume-of-a-sphere.html</loc>
            <lastmod>2010-01-19T22:40:54-05:00</lastmod>
            <priority>0.4</priority>
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      <url>
            <loc>http://www.mathexpression.com/finding-the-volume-of-a-sphere-diameter-given.html</loc>
            <lastmod>2009-08-27T09:47:29-04:00</lastmod>
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            <loc>http://www.mathexpression.com/finding-the-volume-of-a-sphere-diameter-given-comments.html</loc>
            <lastmod>2009-08-27T09:47:29-04:00</lastmod>
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            <loc>http://www.mathexpression.com/find-the-area-of-a-triangle.html</loc>
            <lastmod>2010-02-08T03:21:33-05:00</lastmod>
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            <loc>http://www.mathexpression.com/find-the-dimensions-of-a-rectangle.html</loc>
            <lastmod>2009-08-06T04:35:32-04:00</lastmod>
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            <lastmod>2009-08-06T04:35:32-04:00</lastmod>
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            <loc>http://www.mathexpression.com/find-the-equation-of-the-line-as-described-below.html</loc>
            <lastmod>2010-03-06T03:39:16-05:00</lastmod>
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            <loc>http://www.mathexpression.com/find-the-equivalent-fraction-for-1112.html</loc>
            <lastmod>2009-08-06T09:26:33-04:00</lastmod>
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            <lastmod>2009-08-06T09:26:33-04:00</lastmod>
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            <loc>http://www.mathexpression.com/find-the-length-and-width-of-a-rectangle.html</loc>
            <lastmod>2010-03-25T04:32:44-04:00</lastmod>
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            <lastmod>2010-02-25T04:34:08-05:00</lastmod>
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            <loc>http://www.mathexpression.com/find-the-x-and-y-intercept-of-a-linear-equation.html</loc>
            <lastmod>2010-11-14T20:11:01-05:00</lastmod>
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            <loc>http://www.mathexpression.com/formula-for-area.html</loc>
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            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/parallelogram-area-example.png</image:loc>
              <image:caption>Using the formula for the area of a parallelogram</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/rectangle-lw.png</image:loc>
              <image:caption>rectangle with width w and length l</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/triangle-area-example.png</image:loc>
              <image:caption>Using the area formula of a triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/trapezoid-area-formula.png</image:loc>
              <image:caption>formula for the area of a trapezoid</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/trapezoid-with-label.png</image:loc>
              <image:caption>a trapezoid with the heigh h, and parallel sides of a and b.</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmallorange.png</image:loc>
              <image:caption>Worksheets icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/circle-area-pir2.png</image:loc>
              <image:caption>formula for the area of a circle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmallyellow.png</image:loc>
              <image:caption>Worksheets icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmallgreen.png</image:loc>
              <image:caption>Quick notes icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/triangle-area-half-bh.png</image:loc>
              <image:caption>formula for the area of a triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/rectangle-area-example.png</image:loc>
              <image:caption>Using the formula for the area of a rectangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/circle-area-example.png</image:loc>
              <image:caption>Using the formula for the area of a circle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/rectangle-area-lw.png</image:loc>
              <image:caption>formula for the area of a rectangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/parallelogram-b-h.png</image:loc>
              <image:caption>a parallelogram with the base b and height h</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmallyellow.png</image:loc>
              <image:caption>Quick notes icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/square-area-example.png</image:loc>
              <image:caption>Using the formula for the area of a square</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/area-square-l-2.png</image:loc>
              <image:caption>formula for the area of a square</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/square.png</image:loc>
              <image:caption>square with the sides L</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmallgreen.png</image:loc>
              <image:caption>Worksheets icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/fractional-exponent.html</loc>
            <lastmod>2011-10-13T01:35:53-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractional-exponents.png</image:loc>
              <image:caption>Formula relating fractional exponents with roots</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/fractional-exponents-find-the-expressions-value.html</loc>
            <lastmod>2009-08-06T04:36:41-04:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/fractional-exponents-find-the-expressions-value-comments.html</loc>
            <lastmod>2009-08-06T04:36:41-04:00</lastmod>
            <priority>0.3</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/fractional-exponents-practice-q1.html</loc>
            <lastmod>2008-02-21T19:41:07-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap34q1a-step1.png</image:loc>
              <image:caption>27 to the power of negative 2 over 3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractional-exponent-equation.png</image:loc>
              <image:caption>Formula relating fractional exponents with roots</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap34q1a-step4.png</image:loc>
              <image:caption>The answer is 1/9</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap34q1.png</image:loc>
              <image:caption>first law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap34q1a-step3.png</image:loc>
              <image:caption>Simplifying the term to get 1 over 3 to the power of 2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap34q1a-step2.png</image:loc>
              <image:caption>Changing the term into roots symbol</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/six-law-of-exponent.png</image:loc>
              <image:caption>Changing negative exponent to positive exponent</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/fractional-exponents-practice-q2.html</loc>
            <lastmod>2008-02-21T19:44:19-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap34q2a-step2.png</image:loc>
              <image:caption>&#39;+&#39; sign multiply by &#39;-&#39; sign gives &#39;-&#39; sign</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap34q2a-step3.png</image:loc>
              <image:caption>Simplifying the fractional exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap34q2a-step4.png</image:loc>
              <image:caption>The answer is a</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap34q2.png</image:loc>
              <image:caption>Simplifying a^(3/2) x a^(-1/2)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/first-law-of-exponent.png</image:loc>
              <image:caption>first law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap34q2a-step1.png</image:loc>
              <image:caption>The term to simplify using the first law of exponents</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/fractions-library.html</loc>
            <lastmod>2009-07-09T02:57:31-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/fractions-word-problem-calculate-the-remaining-pipe-length.html</loc>
            <lastmod>2010-01-19T04:35:56-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/fraction-to-percent.html</loc>
            <lastmod>2011-10-18T23:45:56-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-100-with-3.png</image:loc>
              <image:caption>100 multiply by 3 gives 300</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/300-divide-5.png</image:loc>
              <image:caption>300 divides by 5 gives 60%</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-by-100.png</image:loc>
              <image:caption>multiply 3/5 with 100</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fraction-to-percent.png</image:loc>
              <image:caption>converting fraction to percent</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/fraction-worksheets.html</loc>
            <lastmod>2009-12-29T06:02:07-05:00</lastmod>
            <priority>0.9</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmallorange.png</image:loc>
              <image:caption>Worksheets icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmallyellow.png</image:loc>
              <image:caption>Worksheets icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmallgreen.png</image:loc>
              <image:caption>Quick notes icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmallorange.png</image:loc>
              <image:caption>Quick notes icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmallyellow.png</image:loc>
              <image:caption>Quick notes icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmallgreen.png</image:loc>
              <image:caption>Worksheets icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/free-math-tutor-blog.html</loc>
            <lastmod>2009-04-17T09:45:43-04:00</lastmod>
            <priority>0.9</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/blog-icon.png</image:loc>
              <image:caption>Blog Icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Home</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/full-angle-practice.html</loc>
            <lastmod>2009-12-09T22:39:11-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/360-degree-angle.png</image:loc>
              <image:caption>Angle II is a full angle.</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/a-reflex-angle--iv.png</image:loc>
              <image:caption>Angle IV is not a full angle.</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/90-degree-angle-i.png</image:loc>
              <image:caption>Angle I is not a full angle.</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/180-degree-angle.png</image:loc>
              <image:caption>Angle III is not a full angle.</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/identify-full-angle.png</image:loc>
              <image:caption>identify the full angle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/graphing.html</loc>
            <lastmod>2011-10-18T04:59:42-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/graphing.jpg</image:loc>
              <image:caption>Graph Plotting</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/graphing-equations.html</loc>
            <lastmod>2009-03-23T07:18:26-04:00</lastmod>
            <priority>0.9</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/line-graph.png</image:loc>
              <image:caption>A line graph</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/graphing-quadratic-equation-practice.html</loc>
            <lastmod>2009-03-23T07:04:25-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/table-fill-5.png</image:loc>
              <image:caption>when x is -2, y is 5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/x-2-solve-y.png</image:loc>
              <image:caption>calculating for y when x is 2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/x-1-solve-y.png</image:loc>
              <image:caption>calculating for y when x is 1</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/x--neg-2-solve-y.png</image:loc>
              <image:caption>calculating for y when x is -2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/table-fill-all-x-y-2.png</image:loc>
              <image:caption>table is filled with all the coordinates</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/quad-table-values.png</image:loc>
              <image:caption>table to fill</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/table-fill-neg-4.png</image:loc>
              <image:caption>when x is 1, y is -4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/table-fill-neg-3.png</image:loc>
              <image:caption>when x is 2, y is -3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/quadratic-graph-practice.png</image:loc>
              <image:caption>graph of y = x^2 -2x -3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/plotted-graph.png</image:loc>
              <image:caption>7 points plotted on the graph</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/graphing-quadratic-equation-practice-2.html</loc>
            <lastmod>2009-03-23T07:13:42-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/vertex-formula.png</image:loc>
              <image:caption>formula for the x-coordinate of the vertex, x= -b/2a</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/table-x-equals-neg-1.png</image:loc>
              <image:caption>the x-coordinate of the vertex is -1</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/table-fill-neg-5.png</image:loc>
              <image:caption>when x = -4, y is -5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/all-points-on-graph.png</image:loc>
              <image:caption>all the 7 points plotted on the graph</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/comparing-equations-2.png</image:loc>
              <image:caption>comparing the equations</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/table-fill-all-x-y.png</image:loc>
              <image:caption>table with all the coordinates</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calc-x-coor-vertex.png</image:loc>
              <image:caption>calculating for the x-coordinate of the vertex</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/table-with-x-coordinates.png</image:loc>
              <image:caption>table with all the x-coordinates</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/quadratic-a-point.png</image:loc>
              <image:caption>location of the vertex</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/x-neg-4-solve-y.png</image:loc>
              <image:caption>calculating the y-coordinate when x = -4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/empty-x-y-table.png</image:loc>
              <image:caption>formula for the x-coordinate of the vertex, x= -b/2a</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/table-quadratic-graph.png</image:loc>
              <image:caption>graph of y= -x^2 -2x +3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/graphing-quadratic-equations.html</loc>
            <lastmod>2011-10-18T04:59:41-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/quadratic-a-positive.png</image:loc>
              <image:caption>graph for &#39;a&#39; greater than 0</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/general-equation-quad.png</image:loc>
              <image:caption>multiply 3/5 with 100</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/quadratic-a-negative.png</image:loc>
              <image:caption>graph for &#39;a&#39; less than than 0</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/quadratic-graph.png</image:loc>
              <image:caption>a quadratic graph</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/graphs-library.html</loc>
            <lastmod>2010-02-08T01:57:08-05:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/how-to-add-fractions.html</loc>
            <lastmod>2011-10-18T23:33:30-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-convert-two-fractions.png</image:loc>
              <image:caption>convert mixed to improper fraction</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-add-number-fraction.png</image:loc>
              <image:caption>Shortcut to get the answer</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-whole-number-fraction.png</image:loc>
              <image:caption>Add 2 with 1/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c505-adding-two-fractions.png</image:loc>
              <image:caption>Adding fractions</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/how-to-divide-fractions.html</loc>
            <lastmod>2011-10-18T23:45:56-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/how-to-divide-fractions.png</image:loc>
              <image:caption>dividing fractions examples</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/how-to-find-the-volume.html</loc>
            <lastmod>2011-10-19T01:04:40-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/rectangular-solid.png</image:loc>
              <image:caption>rectangular solid with width R, length L and height H</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/cylinder.png</image:loc>
              <image:caption>cylinder with radius R and height H</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/how-to-multiply-fractions.html</loc>
            <lastmod>2011-10-18T23:45:56-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fraction-5-over-15.png</image:loc>
              <image:caption>The final fraction is 7/15</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-3-5-7-9.png</image:loc>
              <image:caption>Multiply the fractions, 3/5 with 7/9</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/simplified-fraction.png</image:loc>
              <image:caption>Simplifying gives (1 x 7)/(5 x 3)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/divide-common-factor.png</image:loc>
              <image:caption>Divide 3 and 9 with the common factor 3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplication-step-1.png</image:loc>
              <image:caption>Multiply the numerators and denominators, (3 x 7)/(5 x 9)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/divide-common-factor-2.png</image:loc>
              <image:caption>divide with the common factor 2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/improper-fractions.html</loc>
            <lastmod>2011-10-18T23:23:07-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/convert-mixed-fraction.png</image:loc>
              <image:caption>converting mixed to improper fractions</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/improper-mixed-fractions.png</image:loc>
              <image:caption>improper and mixed fractions</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/convert-improper-fraction.png</image:loc>
              <image:caption>converting improper to mixed fractions</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c502-convert-fractions.png</image:loc>
              <image:caption>difference betweeen improper and mixed fractions</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/improper-fractions-practice-q1.html</loc>
            <lastmod>2008-08-03T23:21:48-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c502-fraction-division.png</image:loc>
              <image:caption>long division for 11/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c502-fraction-2-3-over-4.png</image:loc>
              <image:caption>mixed fraction 2 3/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c502-fraction-remainder.png</image:loc>
              <image:caption>The remainder is the mixed fraction&#39;s numerator</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c502-fraction-11-over-4.png</image:loc>
              <image:caption>improper fraction 11/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/improper-fractions-practice-q2.html</loc>
            <lastmod>2008-08-03T23:21:48-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c502-add-21-with-2.png</image:loc>
              <image:caption>Add 21 with 2, this gives 23</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c502-mixed-fraction-21.png</image:loc>
              <image:caption>7 multiply by 3 gives 21</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c502-fraction-7-x-3.png</image:loc>
              <image:caption>multiply 7 with 3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c502-fraction-3-2-over-7.png</image:loc>
              <image:caption>mixed fraction 3 2/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c502-fraction-23-over-7.png</image:loc>
              <image:caption>improper fraction 23/7</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/index.html</loc>
            <lastmod>2011-02-25T03:32:44-05:00</lastmod>
            <priority>1.0</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/triangle-icon.png</image:loc>
              <image:caption>Triangle Icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsicon.png</image:loc>
              <image:caption>Study tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/interest-icon.png</image:loc>
              <image:caption>Interest Icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/scalene-triangle-lesson.png</image:loc>
              <image:caption>scalene triangle lesson</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosicon.png</image:loc>
              <image:caption>Math videos icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/symmetry-icon.png</image:loc>
              <image:caption>Symmetry Icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepicon.png</image:loc>
              <image:caption>Step-by-step solutions icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/exponent-icon.png</image:loc>
              <image:caption>Exponent Icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceicon.png</image:loc>
              <image:caption>Practice questions icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-icon.png</image:loc>
              <image:caption>Fractions Icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/algebra-icon.gif</image:loc>
              <image:caption>Basic algebra icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/volume-icon.png</image:loc>
              <image:caption>Measurement Icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/graphicon.gif</image:loc>
              <image:caption>Graphs icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/angles-icon.png</image:loc>
              <image:caption>Angles Icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Home</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/interest-formulas.html</loc>
            <lastmod>2009-12-30T07:26:26-05:00</lastmod>
            <priority>0.9</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/interest-properties.png</image:loc>
              <image:caption>Interest Properties</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/interests-library.html</loc>
            <lastmod>2009-07-09T03:21:09-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/interpreting-the-slope-of-a-line-before-graphing.html</loc>
            <lastmod>2010-02-08T02:14:34-05:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/isosceles-triangle.html</loc>
            <lastmod>2011-10-19T03:42:00-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/isosceles-triangles-eg.png</image:loc>
              <image:caption>examples of isosceles triangles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/same-base-angles.png</image:loc>
              <image:caption>The base angles of an isosceles triangle are the same</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/isosceles-triangle-pic.png</image:loc>
              <image:caption>isosceles triangle example</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/isosceles-triangle-practice.html</loc>
            <lastmod>2010-05-05T21:19:51-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/find-isosceles-triangle.png</image:loc>
              <image:caption>identify all the isosceles triangles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/is-isosceles-triangle-iv.png</image:loc>
              <image:caption>Triangle IV is not an isosceles triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/is-isosceles-triangle-ii.png</image:loc>
              <image:caption>Triangle IV is an isosceles triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/is-isosceles-triangle-i.png</image:loc>
              <image:caption>Triangle IV is an isosceles triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/is-isosceles-triangle-iii.png</image:loc>
              <image:caption>Triangle IV is not an isosceles triangle</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/learning-fractions.html</loc>
            <lastmod>2009-12-29T05:55:35-05:00</lastmod>
            <priority>0.9</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fractions-parts.png</image:loc>
              <image:caption>parts of a proper fraction</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/like-terms-practice-q1.html</loc>
            <lastmod>2008-08-03T23:21:48-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/algebraic-expression.png</image:loc>
              <image:caption>Algebra expression</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap22q1a-step4.png</image:loc>
              <image:caption>The fourth term -3x</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap22q1a-step3.png</image:loc>
              <image:caption>The third term +5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap22q1a-step1.png</image:loc>
              <image:caption>The first term 7x^2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap22q1a-step2.png</image:loc>
              <image:caption>The second term -3y</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/like-terms-practice-q2.html</loc>
            <lastmod>2008-02-21T20:02:33-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/three-y-3-x-2.png</image:loc>
              <image:caption>3 y power of 3 x power of 2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/like-terms.png</image:loc>
              <image:caption>Algebra expression</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/two-x-2-y-3.png</image:loc>
              <image:caption>2 x power of two y power of 3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/m-over-3.png</image:loc>
              <image:caption>2 x power of two y power of 3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/neg-zero-one-m.png</image:loc>
              <image:caption>3 y power of 3 x power of 2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/neg-five-p-3-q-2.png</image:loc>
              <image:caption>2 x power of two y power of 3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/two-p-2-q-3.png</image:loc>
              <image:caption>3 y power of 3 x power of 2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/three-x-2.png</image:loc>
              <image:caption>Three x square</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/x-2-over-4.png</image:loc>
              <image:caption>x square over 4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/linear-equation-practice-one.html</loc>
            <lastmod>2008-08-03T23:21:48-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap27q2a-step1i.png</image:loc>
              <image:caption>Algebra equation x = 1 +8</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap27q2a-step1.png</image:loc>
              <image:caption>Remove -8</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap27q2a-step2.png</image:loc>
              <image:caption>Add 1 with 8</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap27q2a.png</image:loc>
              <image:caption>Algebra equation x -8 = 1</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap27q2a-step3.png</image:loc>
              <image:caption>Answer is x =9</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/linear-equation-practice-two.html</loc>
            <lastmod>2008-02-21T20:34:03-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap27q1a-step2.png</image:loc>
              <image:caption>Algebra equations r +2r = 9 -3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap27q1a.png</image:loc>
              <image:caption>Algebra equation r +3 = 9 -2r</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap27q1a-step1.png</image:loc>
              <image:caption>Algebra equations r = 9 -2r -3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap27q1a-step4i.png</image:loc>
              <image:caption>Divide &#39;3r = 6&#39; with 3 on both sides</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap27q1a-step4ii.png</image:loc>
              <image:caption>r = 6/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap27q1a-step5.png</image:loc>
              <image:caption>Answer is r = 2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap27q1a-step3.png</image:loc>
              <image:caption>Algebra equations 3r = 6</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/linear-equations-practice-q1.html</loc>
            <lastmod>2008-08-03T23:21:49-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/pstable.jpg</image:loc>
              <image:caption>Coordinates table question picture</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/linear-equations-practice-q2.html</loc>
            <lastmod>2008-02-21T21:02:11-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/q13a2step3.jpg</image:loc>
              <image:caption>Table filled with x and y coordinates</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/q13a2step1.jpg</image:loc>
              <image:caption>Empty table</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/q13a2step4.jpg</image:loc>
              <image:caption>The line, y = x + 1 passes through points P and U</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/chap13q2.jpg</image:loc>
              <image:caption>5 coordinate points question picture</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/q13a2step2.jpg</image:loc>
              <image:caption>Table filled with x-coordinates</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/line-of-symmetry.html</loc>
            <lastmod>2008-06-11T09:21:32-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-star-symmetry-5.png</image:loc>
              <image:caption>five-pointed star with line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-star-symmetry-fold-1.png</image:loc>
              <image:caption>five-pointed star is symmetrical</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-star-symmetry-fold-3.png</image:loc>
              <image:caption>moon picture</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-star-symmetry-1.png</image:loc>
              <image:caption>five-pointed star with line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-star.png</image:loc>
              <image:caption>five-pointed star picture</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-star-symmetry-4.png</image:loc>
              <image:caption>five-pointed star with line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-star-symmetry-3.png</image:loc>
              <image:caption>five-pointed star with line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-star-symmetry-fold-4.png</image:loc>
              <image:caption>five-pointed star is symmetrical</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-star-symmetry-2.png</image:loc>
              <image:caption>five-pointed star with line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-star-symmetry-fold-5.png</image:loc>
              <image:caption>five-pointed star is symmetrical</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-star-symmetry-all.png</image:loc>
              <image:caption>star is all the lines of symmetry</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-star-symmetry-fold-2.png</image:loc>
              <image:caption>five-pointed star is symmetrical</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/lines-of-symmetry.html</loc>
            <lastmod>2008-06-11T09:21:32-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-parallelogram-line-2.png</image:loc>
              <image:caption>parallelogram with diagonal line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-parallelogram-fold-4.png</image:loc>
              <image:caption>parallelogram folded along the diagonal line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-parallelogram-line-1.png</image:loc>
              <image:caption>parallelogram folded along the vertical line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-parallelogram-all.png</image:loc>
              <image:caption>parallelogram with all the lines</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-parallelogram.png</image:loc>
              <image:caption>parallelogram picture</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-parallelogram-fold-2.png</image:loc>
              <image:caption>parallelogram folded along the diagonal line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-parallelogram-line-3.png</image:loc>
              <image:caption>parallelogram with horizontal line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-parallelogram-line-4.png</image:loc>
              <image:caption>parallelogram with diagonal line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-parallelogram-fold-1.png</image:loc>
              <image:caption>parallelogram with vertical line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-parallelogram-fold-3.png</image:loc>
              <image:caption>parallelogram folded along the horizontal line</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/line-symmetry.html</loc>
            <lastmod>2011-10-18T23:09:35-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-line-of-symmetry.png</image:loc>
              <image:caption>line symmetry for a fractal picture</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-lines-triangle.png</image:loc>
              <image:caption>no rotational symmetry</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c402-line-symmetry-triangle.png</image:loc>
              <image:caption>line of symmetry of a triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/line-with-xintercept-or-yintercept-or-both.html</loc>
            <lastmod>2009-08-06T04:45:22-04:00</lastmod>
            <priority>0.4</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/line-with-xintercept-or-yintercept-or-both-comments.html</loc>
            <lastmod>2009-08-06T04:45:22-04:00</lastmod>
            <priority>0.3</priority>
      </url>
      <url>
            <loc>http://www.mathexpression.com/maturity-value-practice.html</loc>
            <lastmod>2009-05-04T06:47:35-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/maturity-value-i-p-1-rt.png</image:loc>
              <image:caption>maturity value formula</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/calc-maturity-value.png</image:loc>
              <image:caption>using the maturity value formula</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/measurements-library.html</loc>
            <lastmod>2010-03-25T04:39:57-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/multiply-fractions-practice.html</loc>
            <lastmod>2008-08-03T23:21:49-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-the-numerators.png</image:loc>
              <image:caption>Multiply the numerators ( 5 x 3 = 15)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-2-fractions.png</image:loc>
              <image:caption>Multiply fractions, 5/7 with 3/10</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-the-denominators.png</image:loc>
              <image:caption>Multiply the denominators (7 x 10 = 70)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fraction-3-over-14.png</image:loc>
              <image:caption>Simplify the fraction, 15/70</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/multiply-fractions-practice-q2.html</loc>
            <lastmod>2008-07-07T05:17:55-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-numerators-7-3.png</image:loc>
              <image:caption>Multiply the numerators (7 x 3 = 21)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-mixed-fraction.png</image:loc>
              <image:caption>Multiply fractions,2 1/3 with 3/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mutiply-denominators-3-4.png</image:loc>
              <image:caption>Multiply the denominators (3 x 4 = 12)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/convert-mixed-to-improper.png</image:loc>
              <image:caption>Convert 2 1/3 to improper fraction</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/convert-21-12.png</image:loc>
              <image:caption>Convert 21/12 to mixed fraction</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/simplify-fraction-1-3-4.png</image:loc>
              <image:caption>Simplify the fraction, 1 9/12</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mutiply-7-3-with-3-4.png</image:loc>
              <image:caption>Multiply 7/3 with 3/4</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/multiply-fractions-practice-s1.html</loc>
            <lastmod>2008-08-03T23:38:34-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fraction-1-over-6.png</image:loc>
              <image:caption>The final fraction, 1/6</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mutliply-the-fractions.png</image:loc>
              <image:caption>Multiply the fractions, (1 x 1)/(2 x 3)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-1-2-with-3-9.png</image:loc>
              <image:caption>Multiply fractions, 1/2 with 3/9</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/simplified-3-9-to1-3.png</image:loc>
              <image:caption>fraction has common factor 3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Next question</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/multiply-fractions-practice-s2.html</loc>
            <lastmod>2008-07-13T01:55:38-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-5-6-with3-10.png</image:loc>
              <image:caption>Multiply fractions, 5/6 with 3/10</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-numer-denom.png</image:loc>
              <image:caption>Multiply the fractions (5 x 3)/(6 x 10)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/divide-common-factor-5.png</image:loc>
              <image:caption>Divide with the common factor 5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/fraction-1-4.png</image:loc>
              <image:caption>The final fraction, 1/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/divide-common-factor-3.png</image:loc>
              <image:caption>Divide with the common factor 3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Previous</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/multiplying-fractions.html</loc>
            <lastmod>2011-10-18T23:33:30-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/convert-mixed-fractions.png</image:loc>
              <image:caption>Convert mixed fractions to improper fractions</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-mixed-fractions.png</image:loc>
              <image:caption>Multiply 1 1/2 with 2 1/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction.png</image:loc>
              <image:caption>multiplying fractions</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-denominators.png</image:loc>
              <image:caption>Multiply the denominators (4 x 5 = 20)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-numerators.png</image:loc>
              <image:caption>Multiply the numerators (2 x 1 = 2)</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-and-simplify.png</image:loc>
              <image:caption>Multiply the converted fraction, 3/2 with 7/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiply-improper.png</image:loc>
              <image:caption>Multiply 3/2 with 7/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/simply-fraction.png</image:loc>
              <image:caption>Simplify the fraction 2/20</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/multiplying-fractions-worksheet.html</loc>
            <lastmod>2008-07-14T08:27:53-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-q6.png</image:loc>
              <image:caption>5/7 x 9/2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-q1.png</image:loc>
              <image:caption>1/3 x 1/2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-a1.png</image:loc>
              <image:caption>answer is 1/6</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-a3.png</image:loc>
              <image:caption>answer is 8/25</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-a4.png</image:loc>
              <image:caption>answer is 15/77</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-a2.png</image:loc>
              <image:caption>answer is 2/15</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math videos icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-q2.png</image:loc>
              <image:caption>1/3 x 2/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-q5.png</image:loc>
              <image:caption>8/9 x 4/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-q3.png</image:loc>
              <image:caption>2/5 x 4/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-a6.png</image:loc>
              <image:caption>answer is 3 3/14</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-q4.png</image:loc>
              <image:caption>3/7 x 5/11</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-q7.png</image:loc>
              <image:caption>5/3 x 10/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-a8.png</image:loc>
              <image:caption>answer is 1 11/45</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-a7.png</image:loc>
              <image:caption>answer is 2 8/21</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-a5.png</image:loc>
              <image:caption>answer is 1 5/27</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws-q8.png</image:loc>
              <image:caption>7/5 x 8/9</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Home</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/multiplying-fractions-worksheet-2.html</loc>
            <lastmod>2008-07-25T05:22:10-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-a7.png</image:loc>
              <image:caption>answer is 2/3</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-q2.png</image:loc>
              <image:caption>3/9 x 1/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-a2.png</image:loc>
              <image:caption>answer is 1/15</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-q8.png</image:loc>
              <image:caption>33/35 x 7/11</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-q5.png</image:loc>
              <image:caption>10/11 x 7/15</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math videos icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-a5.png</image:loc>
              <image:caption>answer is 14/33</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-a3.png</image:loc>
              <image:caption>answer is 3/7</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-q1.png</image:loc>
              <image:caption>1/3 x 2/4</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-q4.png</image:loc>
              <image:caption>4/5 x 11/12</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-q7.png</image:loc>
              <image:caption>5/4 x 8/15</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-a6.png</image:loc>
              <image:caption>answer is 1/6</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-a4.png</image:loc>
              <image:caption>answer is 11/15</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-a8.png</image:loc>
              <image:caption>answer is 3/5</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-a1.png</image:loc>
              <image:caption>answer is 1/6</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-q6.png</image:loc>
              <image:caption>3/4 x 2/9</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/multiplying-fraction-ws2-q3.png</image:loc>
              <image:caption>6/7 x 1/2</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Home</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/negative-slope.html</loc>
            <lastmod>2011-10-18T05:20:35-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/infinite-negative-slope.png</image:loc>
              <image:caption>infinite and negative slope</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/negative-slope-question.html</loc>
            <lastmod>2008-02-21T21:12:01-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c17q1-positive-slope-s1i.png</image:loc>
              <image:caption>positive slope</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c17q1-positive-slope-s1.png</image:loc>
              <image:caption>positive slope</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c17q1-infinite-slope-s2i.png</image:loc>
              <image:caption>infinite slope</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c17q1-negative-slope-s5.png</image:loc>
              <image:caption>negative slope</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c17q1-slope.png</image:loc>
              <image:caption>Multiple lines with slopes labeled</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c17q1-negative-slope-s2i.png</image:loc>
              <image:caption>negative slope</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c17q1-infinite-slope-s2.png</image:loc>
              <image:caption>infinite slope</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c17q1-zero-slope-s2i.png</image:loc>
              <image:caption>zero slope</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c17q1-zero-slope-s2.png</image:loc>
              <image:caption>zero slope</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/c17q1-negative-slope-s2.png</image:loc>
              <image:caption>negative slope</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/obtuse-angle-practice.html</loc>
            <lastmod>2009-11-26T03:33:58-05:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/identify-obtuse-angles.png</image:loc>
              <image:caption>identify all the obtuse angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/angle-110-degrees.png</image:loc>
              <image:caption>Angle I is an obtuse angle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/acute-angle-2.png</image:loc>
              <image:caption>Angle II is not an obtuse angle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/angle-320-degrees.png</image:loc>
              <image:caption>Angle III is not an obtuse angle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/obtuse-angle-iv.png</image:loc>
              <image:caption>Angle IV is an obtuse angle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/obtuse-angles.html</loc>
            <lastmod>2011-10-19T03:10:27-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/obtuse-angle-picture.png</image:loc>
              <image:caption>an obtuse angle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/obtuse-angles-eg.png</image:loc>
              <image:caption>examples on obtuse angles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/obtuse-triangle.html</loc>
            <lastmod>2011-10-19T03:42:01-04:00</lastmod>
            <priority>0.5</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/practiceiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/obtuse-triangle-example.png</image:loc>
              <image:caption>obtuse triangle example</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/obtuse-triangles-eg.png</image:loc>
              <image:caption>examples of obtuse triangles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/whyiconsmall.png</image:loc>
              <image:caption>Why icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsiconsmall.png</image:loc>
              <image:caption>Tips icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/mathvideosiconsmall.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/search-icon-small.png</image:loc>
              <image:caption>Math video icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/studytipsyellow.png</image:loc>
              <image:caption>share icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/obtuse-triangle-practice.html</loc>
            <lastmod>2010-04-28T21:17:04-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/is-obtuse-triangle-iv.png</image:loc>
              <image:caption>Triangle IV is an obtuse triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/answericonsmall.png</image:loc>
              <image:caption>Answer icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/is-obtuse-triangle-iii.png</image:loc>
              <image:caption>Triangle III is an obtuse triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/is-obtuse-triangle-i.png</image:loc>
              <image:caption>Triangle I is not an obtuse triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/stepbystepiconmsmall.png</image:loc>
              <image:caption>Solution icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/new-rss-icon.gif</image:loc>
              <image:caption>XML RSS</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/questioniconsmall.png</image:loc>
              <image:caption>Quesion icon</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/is-obtuse-triangle-ii.png</image:loc>
              <image:caption>Triangle II is not an obtuse triangle</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/add-google.gif</image:loc>
              <image:caption>Add to Google</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/find-obtuse-triangles.png</image:loc>
              <image:caption>identify all the obtuse triangles</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/menubuttontransp.png</image:loc>
              <image:caption>Back to lesson</image:caption>
            </image:image>
      </url>
      <url>
            <loc>http://www.mathexpression.com/online-fraction-calculator.html</loc>
            <lastmod>2011-08-11T02:49:44-04:00</lastmod>
            <priority>0.9</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/MyMSN.gif</image:loc>
              <image:caption>Add to My MSN</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/images/addtomyyahoo2.gif</image:loc>
              <image:caption>Add to My Yahoo!</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/topimage.png</image:loc>
              <image:caption>Math Expression Banner</image:caption>
            </image:image>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/lessoniconsmall.png</image:loc>
              <image:caption>Lesson icon</image:caption>
            </image:image>
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            <lastmod>2008-12-06T00:00:16-05:00</lastmod>
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              <image:caption>formula for the area of a parallelogram</image:caption>
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              <image:loc>http://www.mathexpression.com/image-files/parallelogram-4cm-3cm.png</image:loc>
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            <lastmod>2008-12-06T00:01:58-05:00</lastmod>
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              <image:caption>substituting A with 30 and b with 6</image:caption>
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              <image:caption>a parallelogram with the base 6cm and the height h</image:caption>
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            <lastmod>2009-09-01T00:17:50-04:00</lastmod>
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              <image:caption>Calculating the perimeter of the parallelogram</image:caption>
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              <image:loc>http://www.mathexpression.com/image-files/parallelogram-4-7-cm.png</image:loc>
              <image:caption>parallelogram with sides of 4cm and 7cm</image:caption>
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            <loc>http://www.mathexpression.com/parallelogram-practice-4.html</loc>
            <lastmod>2009-09-01T00:19:38-04:00</lastmod>
            <priority>0.6</priority>
            <image:image>
              <image:loc>http://www.mathexpression.com/image-files/parallel-simplify-adding.png</image:loc>
              <image:caption>simplifying by adding -16 to both sides of the equation</image:caption>
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              <image:caption>the equation, 26 = x + 8 + x + 8</image:caption>
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              <image:loc>http://www.mathexpression.com/image-files/parallel-sides-8-x.png</image:loc>
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              <image:loc>http://www.mathexpression.com/image-files/parallel-simplify-equation.png</image:loc>
              <image:caption>simplifying the equation, 16=x+8+x+8</image:caption>
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              <image:loc>http://www.mathexpression.com/image-files/parallel-simplify-divide.png</image:loc>
              <image:caption>x is calculated as 5</image:caption>
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            <loc>http://www.mathexpression.com/perimeter-formulas.html</loc>
            <lastmod>2009-09-03T03:37:01-04:00</lastmod>
            <priority>0.9</priority>
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              <image:caption>formula for the perimeter of a triangle</image:caption>
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              <image:loc>http://www.mathexpression.com/image-files/perimeter-parallelogram-2.png</image:loc>
              <image:caption>formula for the perimeter of a parallelogram</image:caption>
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