A neat site for exploring shapes and fractions using shapes. http://www.arcytech.org/java/patterns/patterns_j.shtml
Plants http://urbanext.illinois.edu/gpe/case1/index.html
Pentomino Game http://www.scholastic.com/blueballiett/games/pentominoes_game.htm
Fun site for practicing math facts and playing games. http://aplusmath.com
abcya.com
http://spaceplace.jpl.nasa.gov/en/kids/
http://kids.nineplanets.org/
http://www.busyteacherscafe.com/webquests/solarsystem/solarsystem_webquest.htm
http://busyteacherscafe.com/webquests/solarsystem/planet_worksheet.htm
http://www.bbc.co.uk/schools/scienceclips/ages/6_7/forces_movement_fs.shtml
Fun math site. http://mathplayground.com
funbrain is an interactive educational game site involving practice in math, grammar, and science. http://www.funbrain.com/kidscenter.html
Fun games to practice multiplication facts. http://gamequarium.com/multiplication.html