This document contains a lesson on calculating area for different shapes. It defines area as the amount of surface a shape covers. It provides formulas for calculating the area of rectangles, parallelograms, triangles, and trapezoids. Examples are given of applying the formulas and calculating the areas of various shapes. At the end, it presents two word problems asking the reader to use the formulas to find the area needed to cover a stained glass window section and a rectangular yard.