Lesson 2: Compressing images

In this lesson, pupils discover different image formats and learn why some are more appropriate for images sent from Mars, learning how compression works at a basic level

Learning Objectives

  • Explaining how the data for digital images can be compressed

  • Recalling that images are made of pixels

  • Relating the number of pixels to the size of an image

  • Explaining one of the methods of JPEG compression

  • Explaining how to reduce the file-size of a digital image

Lesson Plan

Compressing images
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Teacher Video: Compressing images

Presentation: Compressing images

Resources

Compressing images teacher information
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Created by:
Richard Williams,  
Computing specialist
Richard is a Year 6 Teacher at St. Pancras Primary School. Richard’s passion for teaching was recognised when he received Suffolk’s ‘Raising The Bar’ award for Innovation 2016. With his class he made the world’s first guided VR:360 school tour…
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