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You want each square to be large enough to record your players' initials and numbers. The grid should have 100 squares in all1 for each player. Ideally, you should have 100 players total, but this isn't a hard rule. Use a ruler to keep your lines straight as you draw. Making a grid digitally is as easy as opening your word processor! Use the table tool to create a 10x10 grid. You can print the table out on regular 8 inches (20cm)x10 inches (25cm) printer paper. It's okay if you don't have the time or desire to make your own grid. Football Squares is popular enough that you can easily find premade game grids online. Try https://www.superbowlsquares.org/assets/images/grids/football-squares_10x10.jpg. Start with the top row, writing 0 above the first square. Write a new number above each square until you get to the last square, which should be number 9. Repeat with the left side of the grid. Each square will receive a number from the top and side rows, which represents the final digit of the score for each time. Every square on the board represents a potential score outcome for the game. Say, for instance, that one team earns 14 points and the other earns 25. The player with a 4 on the first half of their square (representing the second digit of the first team's score) and a 5 in the bottom half (representing the second digit of the second team's score) wins for that quarter. Write the name of 1 team at the top of the board. The numbers there will represent their scores. Write the name of the other team on the side of the board. Their scores will be reflected by the other numbers written on that side. Make your game board look a little more fun by printing out each team's logo and gluing or taping it on their side of the board!
Draw a 10x10 grid on a large poster board with a permanent marker. Create a grid in a word processing program if you don't want to draw it. Print out a readymade grid from the Internet to save time. Label each row and column with a number from 0 to 9. Assign 2 football teams to the board1 on top and 1 on the sides.