A collection of hand-picked websites focusing on either math games or other fun aspects of math, such as puzzles, riddles, and tricks. Want your kids to practice math? Get them to play Knowledge Adventure's wide array of fun, free, online math games for kids!. FunBrain is the #1 site for online educational games for kids of all ages. (math, grammar, science, spelling, history). Knock down towers in this crazy physics game. Contact Us About Us Privacy COPPA. Cut The Knot A site full of games, puzzles, illustrations, charts, paradoxes, illusions, mathematical droodles - often illustrated with interactive Java applets. Kangaroo Hop - Geometric Shapes. Division Derby Math Game.