# Tic Tac Toe for Three Equations in a Row!

### What You Need:

• paper
• small paper clips or other objects to use as markers
• tic tac toe board
• equation list (see below)

### What You Do:

1. Cut paper to make 20 equation cards. On each card, write a one-step equation from the list below. Write the solution (answer) on the back of the card.
2. If necessary, review the directions for tic tac toe. Players take turns placing a marker in a box. The object is to be the first player to mark 3 boxes across, down or diagonally. Explain that the twist to this version of tic tac toe is that players must correctly solve a one-step equation in order to mark a box. Offer a small prize for the winner.
3. Place equation cards face up in the middle of the table. Player 1 begins by drawing a card, solving the equation on scrap paper and checking the solution on the back of the card. If he answers correctly, he gets to mark a box on the tic tac toe board. If he answers incorrectly, he does not get to mark a box and Player 2 takes his turn.
4. Play continues in this way until one player gets three in row. Keep score on a separate sheet and play up to 5 or 10 points. Be sure to give both players one point if the game is a draw.

Equations:

n + 5 = 10

x – 3 = 7

y + 6 = 15

b – 9 = 2

m + 2 = 8

n – 5 = 15

z + 4 = 12

y – 6 = 8

c + 7 = 9

x – 1 = 14

y + 8 = 13

z – 2 = 11

n + 3 = 18

y – 10 = 12

n + 6 = 20

y – 3 = 9

b + 5 = 25

z – 7 = 21

m + 9 = 30

x – 18 = 25

y + 15 = 40

n – 5 = 18

z + 16 = 46

b – 21 = 50

m + 1 = 19

z – 6 = 14

b + 12 = 24

n – 25 = 10

b + 10 = 12

z – 13 = 27

Note: Play variations of the game to practice several different math concepts. Use your child's math textbook or homework to get equations or problems for the cards.