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OCR (KS4)

KS3 & KS4 computing curriculum

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Computer Science
Year 10

Representation of numbers

6 lessons

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  • Data and information

Description

In this unit pupils will be reminded of how the base-10 number system works before being introduced to the base-2 number system. They will perform conversions between binary and decimal and recognise the rules of binary addition and subtraction. They will be introduced to hexadecimal and its uses.

Understanding how data is represented and compressed helps pupils appreciate the invisible processes that make digital communication and storage possible. This unit strengthens logical thinking and numeracy while revealing how efficiency, accuracy and structure are central to all digital systems. Learning this now deepens pupils’ awareness of the design decisions that shape the technology they use every day.

  1. Why do computers use binary?
  2. Number bases
  3. Binary addition
  4. Binary shifts
  5. Hexadecimal
  6. Hexadecimal number conversions
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