Addition Strip Board: Combination Cards

STRIP BOARD (including doubles)

d. Combination Cards

Control of error: Control Chart I. The child looks at the first addend, finds the column where the combinations have that first addend, then looks for his combination.

Materials:
…box of combination cards
…addition strip board and strips
…paper
…Control Chart I

Exercise:
The child fishes for a combination. He reads it and writes it down on his paper 7+6=___. The first addend is 7, so the blue strip for 7 is placed on the board. The second addend is 6, so the pink strip is placed directly next to the blue strip on the board. The sum is read at the top and is written on the paper next to the equal sign. The strips are put back in their places. The child fishes for another combination, and the exercise continues.

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