Math Web Sites!
http://mathisfun.com/
http://pbskids.org/cyberchase/games.html
http://www.coolmath4kids.com/
http://www.mathplayground.com/
http://www.gamequarium.com/math.htm
http://www.harcourtschool.com/menus/math_advantage.html
http://www.brainpop.com/math/seeall/
Science Web Sites!
http://www.chem4kids.com/
http://kids.mtpe.hq.nasa.gov/
http://kids.nationalgeographic.com/kids/