# Lesson Plan: Area of Squares and Rectangles Mathematics • 4th Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to use a formula to calculate the area of squares and rectangles.

#### Objectives

Students will be able to

• state the formula for the area of a rectangle as length width = area, or base height = area,
• state the formula for the area of a square as side length side length = area, or base height = area,
• multiply to find the areas of squares and rectangles,
• compare the areas of squares and rectangles,
• find missing side lengths by finding missing factors,
• investigate how many ways there are to make a rectangle with a given area.

#### Prerequisites

Students should already be familiar with

• counting unit squares to find the area of rectilinear shapes,
• finding the perimeter of squares and rectangles,
• multiplying whole numbers up to 2 digits by 1-digit numbers,
• multiplication tables up to .

#### Exclusions

Students will not cover

• square numbers and exponents,
• converting between units,
• decimal values,
• fractions.

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