Passage From Addition Chart II to Chart III

ADDITION CHARTS AND COMBINATION CARD EXERCISES

b. Passage from Chart II to Chart III (the Whole Chart)

Materials:
…box of combination cards
…paper
…Control Chart I and III (which has only sums)

Exercise:
The child fishes for a combination. He reads it and writes it down on his paper. What is the first addend? Place your finger on the blue row at the first addend. Place your finger of the other hand on the pink column at the second addend. Move along the row and column until your fingers meet. The meeting place is at the sum. Write the sum on your paper. Fish again, etc.

Control of error: Control Chart I

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