An Experimental Study to Determine the Relative Difficulty of the Elementary Number Combinations in Addition and Multiplication (Classic Reprint) - Tapa dura

Sinopsis

Excerpt from An Experimental Study to Determine the Relative Difficulty of the Elementary Number Combinations in Addition and Multiplication

Nature of the tests. Directions for teachers Results (0) Addition (tables VII and VIII) 1. Discussion 2. Errors in process (table IX), with discussion.

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