Enlargement

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

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

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

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

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

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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.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

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

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

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

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Time to move!

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

For 5 mins...

Move around:
Jog

On the spot:
Dance

The next lesson in:
Ratio (8.7a)
is:
Double number lines

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