# Enlargement

In this lesson, we will learn how ratio relates to enlargements of shapes.

#### 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.I have 5 yellow counters and 7 green counters. What fraction of the counters are green?

1/5

Q2.I have a bag of pink and brown cubes. 5/11 of the cubes are pink. What is the ratio of pink cubes:brown cubes?

2/5

Q3.5 litres of red paint and 8 litres of yellow paint are mixed to make orange. Which of these would give the same shade of paint?

3/5

Q4.Squash and water are mixed in the ratio 2:5. Which other drink will taste the same?

4/5

Q5.Purple paint is made by mixing blue paint and red paint in the ratio 4:3. How much blue paint is needed to mix with 24L of red paint?

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.I have 5 yellow counters and 7 green counters. What fraction of the counters are green?

1/5

Q2.I have a bag of pink and brown cubes. 5/11 of the cubes are pink. What is the ratio of pink cubes:brown cubes?

2/5

Q3.5 litres of red paint and 8 litres of yellow paint are mixed to make orange. Which of these would give the same shade of paint?

3/5

Q4.Squash and water are mixed in the ratio 2:5. Which other drink will taste the same?

4/5

Q5.Purple paint is made by mixing blue paint and red paint in the ratio 4:3. How much blue paint is needed to mix with 24L of red paint?

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:

# Enlargements quiz

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

Q1.Fill in the gap: the diagram shows a triangle that has been _________ by a scale factor of 3.5.

1/5

Q2.Fill in the gap: the ratio between the side lengths AB and BC is 2 : ____.

2/5

Q3.Fill in the gaps: The _______ between the side length DE and EF is also 2 : ___.

3/5

Q4.Fill in the gap: The constant of _________ between the two triangles is 3.5.

4/5

Q5.What is the length of DE?

5/5

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

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

# Enlargements quiz

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

Q1.Fill in the gap: the diagram shows a triangle that has been _________ by a scale factor of 3.5.

1/5

Q2.Fill in the gap: the ratio between the side lengths AB and BC is 2 : ____.

2/5

Q3.Fill in the gaps: The _______ between the side length DE and EF is also 2 : ___.

3/5

Q4.Fill in the gap: The constant of _________ between the two triangles is 3.5.

4/5

Q5.What is the length of DE?

5/5

# Lesson summary: Enlargement

## Time to move!

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

For 5 mins...

Move around:
Walk

On the spot:
Dance