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Lesson 2: Compressing images

Learning how compression works by discovering different image formats and why some are more appropriate for images sent from Mars.
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Learning objective

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Before the lesson

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Lesson plan

1. Recap and recall

Display the Presentation: Speak like an expert and allow time for paired discussion.

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Teach in presentation mode

In this unit

Assessment – Computing Y5: Mars Rover 2Lesson 1: Pixels
Lesson 2: Compressing images
Lesson 3: Fetch-Decode-Execute cycleLesson 4: Tinkering with CADLesson 5: Tinkercad design
Created by:
Kapow Primary Team
Kapow Primary Team
Our team comprises experienced classroom teachers who love the foundation subjectsFind out more
Maintained by: Kapow Primary teamLast update: 15 April 2026

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