# Count controlled iteration

In this lesson, you will develop a Scratch version of the nursery rhyme Ten Green Bottles, using count-controlled iteration. You will be introduced to the concept of debugging and will be given a program to debug by tracing the value of the variables.

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!

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## Q6.Which of the conditions would evaluate to ‘true’ with the following inputs? [2 answers]

Select two (2) boxes

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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!

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## Q6.Which of the conditions would evaluate to ‘true’ with the following inputs? [2 answers]

Select two (2) boxes

6/6

# 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.

Quiz:

# Count controlled iteration

Helping you to assess what you have learnt this lesson

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Quiz:

# Count controlled iteration

Helping you to assess what you have learnt this lesson

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