Proof! is an award-winning, fast, fun, and addicting math game that the whole family can enjoy! Work that mental math magic as you race to find creative equations hidden among nine number cards. Quick! Find an equation among the nine number cards on the table and shout the result before anyone else! Once you've got one, tell everyone the proof! If your math adds up, keep the cards you used. Deal more and keep going! When the deck runs out the player with the most cards wins! For ages 9 and up.