7. Measurement

Lesson

We've used squares and rectangles to help us compare areas . Let's try this problem to review.

Which shape has the smallest area?

A

B

Worked Solution

Idea summary

Area is the amount of space taken up by a shape or object.

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.

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

Each grid square represents 1 square unit.

Worked Solution

Idea summary

We can find the area of a shape on a grid by counting the number of square units.

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.

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

Each grid square represents 1 square unit.

Worked Solution

Idea summary

To find the amount of space a shape takes up, we can use a grid to count the number of unit squares that it covers.

This video shows us how to use unit squares to find the area.

Find the area of the shape below.

Worked Solution

Idea summary

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

Calculate the perimeter and area of rectangles and the volume and capacity of prisms using familiar metric units