Impact Math: Test/Quiz Practice http://www.glencoe.com/sec/math/impact/course1_03/index.php/na
Grade 6 Impact Math Chapter sequence http://www.topsfieldschools.org/PROCTOR/P_Math/Older%20Rebecca/mathsplashnew.htm
Trailblazers web site for Grades 4 and 5 choose edition 2 www.mymathtrailblazers.com
Awesome page for fun run by the National Council for Teachers of Mathematics. http://www.figurethis.org/index.html
All your questions answered with a click of the mouse! http://www.wolframalpha.com/
more great ideas to support learning at home http://illuminations.nctm.org/
This page has many fun games for grades 3 - 5. http://illuminations.nctm.org/Activities.aspx?grade=2
More of the same fun games but for grades 6 - 8. http://illuminations.nctm.org/Activities.aspx?grade=3
Really fun games - try meteor multiplication! http://www.arcademicskillbuilders.com/
More fun games http://gamequarium.org/
MAth Olympiad web site: check out their sample problems and get more information about this wonderful program. www.moems.org