Some flash games that teach Math.
http://www.multiplication.com/flashgames/aquaticspeedway.htm
Some free math games.
http://www.multiplication.com/interactive_games.htm
I'm not so sure about ones you have to install.
Go for the flash ones.
http://www.multiplication.com/flashgames/Bakery.htm
All kids like cookies. I liked this one. Very simple.
