This document outlines a lesson on calculating the area of parallelograms by relating them to rectangles. Students are introduced to finding the area of rectangles and parallelograms. It is explained that the area of a parallelogram can be calculated by decomposing it into rectangles based on its base and height. Examples of calculating the area of different parallelograms are shown. The lesson reinforces that the area formula for parallelograms and rectangles is the same because a parallelogram can always be decomposed into rectangles.
