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Year 9 - Computing

Manipulating digital images

Data representation: images and sound

Unit Summary

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.

Lesson Summary

You will learn to use graphics software to edit and manipulate digital images.

Key Notes

  • Basic image editing with software can be combined to solve complex problems requiring image manipulation.
  • Digital manipulation provides creative benefits but also ethical drawbacks.

Vocabulary To Learn

  • scale: changing the width and height of the image in pixels
  • prompt: the text description you give to the AI tool to tell it what kind of image you want it to create
  • filter: a tool or effect that can be applied to an image to change its appearance

Common Mistakes To Avoid

  • Generative AI always has a negative affect on society.

3 Quick Questions (With Answers)

1. Describe the system or process from this lesson in clear steps.

Basic image editing with software can be combined to solve complex problems requiring image manipulation. Digital manipulation provides creative benefits but also ethical drawbacks.

2. Define this computing term and give one practical example. 'scale'

changing the width and height of the image in pixels. Add one real device or system example to prove understanding.

3. Correct this common computing misconception.

Mistake: Generative AI always has a negative affect on society. Correction: Generative AI isn't always negative; it depends on its use. Generative AI tools can help artists, educators and scientists create innovative designs, engaging learning materials and advanced simulations.

More Lessons In This Unit

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