UCSMP: Everyday Mathematics

Beat the Calculator

Materials: a calculator; number cards 0-9 (4 of each)

Number of Players: 3

Directions:

1. One player is the "Caller." A second player is the "Calculator." The third player is the "Brain."

2. Shuffle the cards and place them facedown on the table.

3. The Caller draws two cards from the number deck and asks for the sum of the numbers.

4. The Calculator solves the problem with a calculator
The Brain solves it without a calculator. The Caller decides who got the answer first.

5. Players trade roles every 10 turns or so.

Variations:

-Play the game with multiplication facts instead of addition facts.

-Play the game with the entire class. Students on one side of the room are Brains and the other students are Calculators.