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Lesson Plan: Perimeter: Unit Squares Mathematics • Third Year of Primary School
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to find the perimeters of polygons using square grids to calculate the sum of side lengths.
Objectives
Students will be able to
- define perimeter as the sum of the measures of the outside edges of a shape,
- use unit squares to count the perimeter,
- find the perimeters of closed shapes.
Prerequisites
Students should already be familiar with
- polygons,
- how to measure using unit squares,
- identifying open and closed shapes.
Exclusions
Students will not cover
- using a formula to calculate perimeter,
- lengths given as fractions.
