Do your children/students like to play Tic Tac Toe? Here's a fun way for them to play the game and have a math review of ODD and EVEN numbers. Odd Numbers: 1, 3, 5, 7, 9, ... Even Numbers: 0, 2, 4, 6, 8, ... Odd and Even Tic Tac Toe Game Materials needed: pencil and paper. Players: 2 Directions: Instead of using Xs and Os, children take turns writing numbers. One child has to only use EVEN numbers and the other child writes in only ODD numbers. Each number may only be used once. As in the traditional game, the first person to get 3 in a row horizontally, vertically, or diagonally wins! Math Vocabulary: odd, even, horizontal, vertical, diagonal. Variations: Use number manipulatives (instead of writing numbers with a pencil). Use number manipulatives and a Tic Tac Toe Board instead of paper and pencil. Use number manipulatives and popsicle sticks. Play the game with Prime and Composite Numbers instead of Even and Odd Numbers. Have fun with Tic Tac Toe (Odd and Even Version)!