# Describing perimeters

In this lesson, we will use different units of length to describe perimeter; calculate the perimeter of polygons and estimate the perimeter of 'curved' shapes.

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Describing perimeters quiz

Please complete the questions below after watching the video.

Q1.Fill in the gap: Perimeter is a measure of the total _________ around the outside of a shape.

1/5

Q2.Fill in the gap: We record perimeter using units of __________, such as m, cm and mm.

2/5

Q3.Find the perimeter of this shape.

3/5

Q4.One side of a square is 8m. What is the perimeter of the square?

4/5

Q5.A regular pentagon has a perimeter of 50mm. What is the length of one side of the pentagon?

5/5

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Describing perimeters quiz

Please complete the questions below after watching the video.

Q1.Fill in the gap: Perimeter is a measure of the total _________ around the outside of a shape.

1/5

Q2.Fill in the gap: We record perimeter using units of __________, such as m, cm and mm.

2/5

Q3.Find the perimeter of this shape.

3/5

Q4.One side of a square is 8m. What is the perimeter of the square?

4/5

Q5.A regular pentagon has a perimeter of 50mm. What is the length of one side of the pentagon?

5/5

# Lesson summary: Describing perimeters

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Climb stairs

On the spot:
Dance