Students learn the meaning of area as the size a surface takes up. They review that area is always measured in square units such as feet or meters. Next, students learn the two formulas for area as they relate to a square ( a = s x s) and rectangle (a = l x w). Practice is provided finding the area of various shapes. Moving on, the concept of a missing side is introduced. The area is given with the measurement of either the width or the length. Students think about the missing factor to find the measurement of the missing side. For further drill, students complete charts that require them to find the area as well as the missing side. Students then solve two more exercises that require finding area. For one problem, the numbers used are larger, so anon screen calculator is supplied for them to use.