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http://www.mathisfun.com
http://www.multiplication.com
http://www.aplusmath.com
http://www.mathplayground.com
http://nlvm.usu.edu/en/nav/grade_g_2.html
http://www.ixl.com/math/practice/grade-4-place-values
http://investigations.terc.edu/library/Games_45.cfm
http://www.uen.org/3-6interactives/math.shtml
Problem-Solving Websiteshttp://www.homeschoolmath.net/online/problem_solving.php
http://mathforum.org/library/topics/problem_solving/
http://www.pbs.org/wgbh/buildingbig/abt_chall.html
http://www.learn4good.com/games/simulation/build_bridge_across_canyon2.htm
http://www.thinkingblocks.com/ThinkingBlocks_Ratios/TB_Ratio_Main.html
http://www.ixl.com/1a?gclid=CKvr3KXf9qcCFUmo4AodJSVdcg
Science Websites
