# Perimeter expressions

In this lesson, we will learn how to form expressions using algebraic lengths and draw shapes given expressions for the perimeter.

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

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

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Fill in the gap. We can use an established inequality to form a related ____.

1/5

Q2.If 19 > 14, which symbol would go in the gap: 7 × 19 __ 7 × 14?

2/5

Q3.If 19>14, which symbol would go in the gap: (−3) × 19 __ (−3) × 14?

3/5

Q4.Which of the following inequalities are true when n = 3 and m = -2?

4/5

Q5.Which of the following inequalities are always true when a > b?

5/5

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

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

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Fill in the gap. We can use an established inequality to form a related ____.

1/5

Q2.If 19 > 14, which symbol would go in the gap: 7 × 19 __ 7 × 14?

2/5

Q3.If 19>14, which symbol would go in the gap: (−3) × 19 __ (−3) × 14?

3/5

Q4.Which of the following inequalities are true when n = 3 and m = -2?

4/5

Q5.Which of the following inequalities are always true when a > b?

5/5

# 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:

# Perimeter Expressions Quiz

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Perimeter is the total _____ of all sides of a shape. When the side lengths are written algebraically the perimeter can be written as an _______.

1/5

Q2.Which of the following is an expression for the perimeter of this shape? (Use the definitions from the lesson.)

2/5

Q3.Which of the following is an expression for the perimeter of this shape? (Use the definitions from the lesson.)

3/5

Q4.Which of the following is an expression for the perimeter of this image? (Use the definitions from the lesson.)

4/5

Q5.Which of the following is an expression for the perimeter of this image? (Use the definitions from the lesson.)

5/5

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

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

# Perimeter Expressions Quiz

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Perimeter is the total _____ of all sides of a shape. When the side lengths are written algebraically the perimeter can be written as an _______.

1/5

Q2.Which of the following is an expression for the perimeter of this shape? (Use the definitions from the lesson.)

2/5

Q3.Which of the following is an expression for the perimeter of this shape? (Use the definitions from the lesson.)

3/5

Q4.Which of the following is an expression for the perimeter of this image? (Use the definitions from the lesson.)

4/5

Q5.Which of the following is an expression for the perimeter of this image? (Use the definitions from the lesson.)

5/5

# Lesson summary: Perimeter expressions

## Time to move!

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

For 5 mins...

Move around:
Walk

On the spot:
Chair yoga