Education Technology

Geometry: Side Length, Perimeter, and Area of a Rectangle
by Texas Instruments

Published on October 17, 2012

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.