8.04 Find areas using a grid

Lesson

Let's try this problem to review how to compare the area of shapes.

Which shape has the smallest area?

1. A

B

A

B

Learn

We can measure area in shapes such as squares and rectangles, but what about different shapes?

To help us measure the area of shapes like the ones pictured below, we can use square units.

In this video, we look at how to calculate the area of shapes similar to those in the picture shown.

Apply

question 1

Find the area of the shape by counting the number of grid squares it covers.

Each grid square represents $1$1 square unit.

Learn

Sometimes we have unusual shapes but we can still work out the area of these shapes by counting the number of square units inside. We can also work out the area of triangles!

Apply

question 2

Find the area of the shape by counting the number of grid squares it covers.

Each grid square represents $1$1 square unit.

Learn

This video shows us how unit squares can help us find the area of a shape.

Apply

question 3

Find the area of the shape.

1. $\editable{}$ units2

Remember!

To find the amount of space a shape takes up, we can use a unit square.

Outcomes

VCMMG166

Compare objects using familiar metric units of area and volume

VCMMG169

Compare the areas of regular and irregular shapes by informal means