# The Happy Caterpillar Problem

In this lesson, you will complete Happy Caterpillars - a visual game of repeated operations.

#### 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.Each blue box is the product of the 3 numbers in that row or column. All the questions refer to this picture below. First, what is the value in box A?

1/3

Q2.What is the value in box B?

2/3

Q3.Which of the following could be a value for C?

3/3

#### 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.Each blue box is the product of the 3 numbers in that row or column. All the questions refer to this picture below. First, what is the value in box A?

1/3

Q2.What is the value in box B?

2/3

Q3.Which of the following could be a value for C?

3/3

# 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:

# The Happy Caterpillar Problem:

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

Q1.Look at this caterpillar. When it gets to 8, what would the next step be?

1/4

Q2.Thinking again about the caterpillar above, which starts at 15, what is its total length?

2/4

Q3.How long is a caterpillar which starts at 27?

3/4

Q4.Look at this caterpillar. Which of these numbers could this caterpillar NOT start with?

4/4

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

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

# The Happy Caterpillar Problem:

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

Q1.Look at this caterpillar. When it gets to 8, what would the next step be?

1/4

Q2.Thinking again about the caterpillar above, which starts at 15, what is its total length?

2/4

Q3.How long is a caterpillar which starts at 27?

3/4

Q4.Look at this caterpillar. Which of these numbers could this caterpillar NOT start with?

4/4

# Lesson summary: The Happy Caterpillar Problem

## 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