Originally, I found this site when it was part of a 25 Best posting. Then, the infamous 49% site discover Jerry Marble dug a little deeper and uncovered its hidden treasures. Early best bet here is the Grand Prix Racing Multiplication Game- but you can go grade levels across the board with a variety of games here. Either play your friends or the computer.
Fun and free educational games for kids in K-8. Featuring multiplayer learning games, math games, language arts games, and much more!
Via Tony Molnar, Danielle Mead