zip, 4.68 MB
zip, 4.68 MB
pdf, 99.62 KB
pdf, 99.62 KB

This teaches students about lossy and lossless compression, along with the need for compression, and the effect on files. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom exam-styled questions with a mark scheme, and a full lesson plan. See the video and the preview image to see what is included!

Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated to ensure it is (one of) the best!

Duration: 1 Lesson

This resource is designed to cover:

  • Why compression is used.
  • Lossy and Lossless compression.
  • Scenarios where each type of compression may be used.
  • Advantages and disadvantages of each type of compression - there is a worksheet task designed for students to obtain this information from the presentation.
  • Effects on different types of files.

    Other complete lessons in Unit 1.2:
  1. RAM, ROM, and Virtual Memory (Primary Storage)
  2. Units of Storage
  3. Secondary Storage
  4. Binary Crash Course
  5. Representing Images
  6. Representing Sound
  7. Representing Characters
  8. Compression (Current)

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