Draw a straight line 2 1/2 inches from the right and left sides of the poster board. Also draw a straight line 1 inch from the top and bottom of the poster board to create a 9-by-9-inch square on the poster board.
Create your game board by making a grid of 1-by-1-inch squares. Use the fine point black marker to trace over the grid lines and the medium point black marker to trace over the border lines of the game board.
Using the 16 round 1 stickers, place one in each corner square. Then place one in the next three diagonally consecutive squares from each corner. Using the fine point black marker, label each of these stickers with "+ 5" for straight addition/subtraction games or "x 2" for multiplication/division games.
Using the five round 2 stickers, place one sticker in the center square. Also place one sticker in the middle square of the top and bottom rows and the far left and right columns. Using your fine point black marker, label each of these stickers with "+ 10" for straight addition/subtraction games or "x 5" for multiplication/division games.
Using the fine point black marker, label 10 of the tile 1 tiles with "0." Label 10 of the tiles with "1." Repeat this for each number from 2 to 9. You should end up with 10 tiles for each digit. These are your number tiles.
Using the fine red marker and the 60 tile 2 tiles, mark 20 with "+," 20 with "-," and 20 with "=." For a higher level game that includes multiplication and division, mark 10 each for addition, subtraction, multiplication and division and 20 with "=." These are your operation tiles.
Separate the tiles into two bags (numbers and operations) and have the students each draw six number tiles and four operation tiles.
Using the mix of number and operation tiles, Player 1 will create a true equation that falls on the center square of the board. One tile must use the center square on the first turn. Player 1 will then draw the same amount of number tiles and operation tiles that he laid on the board.
Record the value of the equation with any bonus squares as Player 1's score for this round.
Repeat Step 2 and 3 for Player 2 and then continue to take turns until all tiles are played.
Determine the winner once all tiles are used or no more true equations can be formed. All scores for each round are added together and the player with the highest score is the winner.