Year 9 · Computing · beta

Data representation: images and sound

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.

This is an attributed Oak National Academy lesson sequence, not a completed or academically approved DASKEREL course. Supporting transcripts may depend on video, images, practical equipment or teacher explanation. Follow each lesson’s supervision guidance. For religious education and RSHE, follow the school’s syllabus, policy and safeguarding procedures.

This Oak index uses an earlier export and lists 4 source lessons. DASKEREL has 6 original lessons for this unit, including 2 linked to source lessons absent from that export. Read the full DASKEREL unit.

Prior knowledge

  • Pupils recognise that computers use binary.
  • Pupils know that binary sequences are made from bits.
  • Pupils recognise that binary digits (bits) have two states, 1 and 0.
  • Pupils know that computers use binary to represent data and instructions.
  • Pupils can identify the impacts technology has on the way that people live their lives.

Source curriculum references

  • Understand how numbers can be represented in binary, and be able to carry out simple operations.
  • Understand a range of ways to use technology safely, respectfully, responsibly and securely.
  • Understand how data of various types can be represented and manipulated digitally.
  • Create, re-use, revise and re-purpose digital artefacts for a given audience.
  • Consider the trustworthiness, design and usability of digital artefacts.

Oak source metadata. DASKEREL has not independently verified school-level coverage.

Loading lessons…