# Merge sort

In this lesson, learners will explore the final sorting algorithm in this unit: merge sort. They will start by considering how they might go about combining two groups of sorted items into one sorted group before being taken through the steps of one merge of a merge sort.

# 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.

# Lesson summary: Merge sort

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### Time to move!

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For 5 mins...

Move around:

Climb stairs

On the spot:

Dance

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The next lesson in Algorithms is "Algorithms review"