Data representation: images and sound
Downloads can take a few minutes, especially for larger files or slower connections.
Threads
Why this why now
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.
Prior knowledge requirements
- 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.
Threads
Why this why now
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.
Prior knowledge requirements
- 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.
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.
6 lessons in unit
slide decks, worksheet PDFs, quizzes and lesson overviews. You can select individual lessons from the Data representation: images and sound unit and download the resources you need, or download the entire unit now. See every unit listed in our secondary computing curriculum and discover more of our teaching resources for secondary computing programmes.