Geometry: Side Length, Perimeter, and Area of a Rectangle

Objectives

• Explain how a change in only the base (or the height) of a rectangle affects its perimeter
• Explain how a change in only the base (or the height) of a rectangle affects its area

Vocabulary

• base
• height
• perimeter
• area

About the Lesson

In this lesson, students will change the base of a rectangle and observe the corresponding changes in the perimeter and area. They will also change the height of a rectangle and observe the corresponding changes in the perimeter and area. As a result. students will:

• Generalize the effect on perimeter when the base (or height) is increased by n units.
• Generalize the effect on area when the base (or height) is increased by n units.