Calculate Perimeter

Make real world connections with your students when it comes to perimeter. Use this geometry lesson with your students to discuss real contexts and teach them how to calculate perimeter.

Grade

Third Grade

Subject

Math

View aligned standards

3.MD.D.8

Learning Objectives

Students will be able to calculate the perimeter of polygons.

Introduction

(2minutes)

Tell students that you have a problem that you need help solving. Explain that you have this really big yard, and a dog that wants to go out and run around. The only issue is that there is no fence.
Ask students to help you determine how much fence is needed in order to enclose the backyard.
Allow students to share ideas.
Tell them that knowing the perimeter of the yard would help determine the amount of fence needed.