Set is the BEST math game for kids!

This is the best game I've used with students or my family. It does not require reading, or even speaking English; and can be played competitively by anyone age 5 or 6 and up. Age or education do not give players any advantage. I have known 6 year olds who can beat me at this game; my daughter played it with her beginning English students in Mongolia! It develops thinking skills and concentration, and kids love it. They recognize they are working hard and learning, but enjoy it anyway. Kids have told me over and over, "It's hard, but it's fun!" It can be purchased at most toy stores or, the best price I've found is at Amazon.
For teachers, if you go to setgame.com you can get transparencies for teaching the game, and even Set t-shirts.