# 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 UpIn 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 practise several different maths concepts. Use your child's maths textbook or homework to get equations or problems for the cards.

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