zip, 7.36 MB
zip, 7.36 MB
pdf, 109.21 KB
pdf, 109.21 KB

This is designed to teach students how images are represented in computers. It provides an overview on bitmaps and vectors, and goes into detail on how pixels are represented. 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:

  • How an image is represented using pixels.
  • How each pixel is represented.
  • Effect of colour depth and resolution on images.
  • Metadata.
  • Calculating the size of an image file.

    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 (Current)
  6. Representing Sound
  7. Representing Characters
  8. Compression

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