Games

http://www.funbrain.com Over sixty games, all educational, all fun!

http://www.techteachers.com/mathweb/games.htm A large collection of math games.

http://www.gameskidsplay.net/ Games kids play.

http://www.scholastic.com/ispy/ I spy game.

http://www.quia.com/web/ Get a thirty day free trail, great for foreign languages and all subject areas k-12.

Puzzles