Task# Distributive Property of Multiplication

Illustrative MathematicsVaries

The goal of this task is to study the distributive property for products of whole numbers, focusing on using geometry to help understand why (-1)×(-1) = 1. This important property can be viewed as an application of the distributive property to whole numbers. While it is not easy to 'visualize' taking a product of negative numbers, the pictures studied here add some tangible evidence why (-1)×(-1) = 1.