Exploring Properties of Addition with Whole Numbers and Fractions

This is inspired by the pullout on Multiplication in At Right Angles, Volume 3, Issue 1 where Padmapriya Shirali mentioned how the commutative, assosiative and distributive properties of multiplication can be verified visually. What appealed to us was that the methods were free from computation and could be used and imagined for any combination of whole numbers no matter how large. We got interested in exploring the properties of addition in a similar manner.

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