How many digits of pi can you sing?

try these

riddles

Play Tower of Hanoi with the computer. How does it win?

Instant Insanity - the summer camp kids LOVE this riddle puzzle. Super easy to make, hours of problem solving fun!

The website http://www.geometrygames.org/ has lots of small software programs to explore topology. Check out KaleioTiles. Freakin' awesome!

try these math games

check out the newest edition of math games and riddles

The website mathplane.com has a lot of fun math stuff, but try the number of squraes riddle on this page within mathplane.com.

PlayNIMwith the computer. How does it win?