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

In this lesson, we will learn how to write a formula for the area of a rectangle using its base and height and use it to calculate the areas of squares and rectangles.

Lesson Plan

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.

Lesson Worksheet

Q1:

Find the area of a rectangle whose length is 12 cm and width is 4 cm.

Q2:

The length of a rectangle is 9 cm and the width is 8 cm. What is the area of the rectangle?

Q3:

Work out the area of the rectangle.