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OCR (KS4)

KS3 & KS4 computing curriculum

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Computing
Year 9

Data representation: images and sound

6 lessons

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  • Data and information

Description

In this unit, pupils will focus on digital media such as images and sounds, and discover the binary digits that lie beneath these types of media. They will explore how images and sound can be manipulated and consider the link between quality of images and sound and the resulting file size.

As pupils’ understanding of binary develops, they are ready to explore how it underpins the digital media they use every day. This unit helps them see that images and sound are not just files on a screen but are made up of binary digits that represent visual and audio data. By uncovering the hidden structure behind digital media, pupils gain a deeper appreciation of how technology works and why quality, size and format matter. This knowledge supports more informed and creative use of digital tools as they move on to complex media projects.

  1. Representing images with binary data
  2. File size of digital images
  3. Manipulating digital images
  4. Representing sound with binary data
  5. Editing sound
  6. File size and compression
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