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GCSE Edexcel

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Unit 3 Data

Component 1 - Principles of Computer Science

 
3

Inside the Unit...

Download Free Sample 5.4mb

Areas Covered

  • Lesson 1 Storage units and binary numbers
  • Lesson 2 Representation of numbers and characters
  • Lesson 3 Binary arithmetic
  • Lesson 4 Images
  • Download sample lesson above
  • Lesson 5 Sound
  • Lesson 6 Compression and data encryption
  • Lesson 7 Databases
  • Lesson 8 Assessment

There are 7 worksheets, 7 homework tasks, and an examination-style assessment test, each with answers included in this unit.

Summary

The unit is subdivided into seven learning hours plus an end-of-unit assessment spread across eight lessons. It is a theoretical unit covering Topic 3 of the 2016 Edexcel Computer Science specification 1CP1. The conversion of integers from denary to binary (including sign and magnitude and two’s complement) is covered in the first lesson. In subsequent lessons, the use of hexadecimal numbers and character encoding is described with practical programming exercises to reinforce understanding. Binary addition including logical and arithmetic binary shifts are also covered. Representation of images and sound are covered in two separate lessons with two final lessons covering lossy and lossless compression techniques, encryption and databases. In the final lesson students sit an assessment test comprising questions similar to those found on the GCSE exam paper.   

Toolkit

The GCSE units have been written to satisfy the specification for the theoretical element 1CP1 of the Edexcel Computer Science GCSE. They are also suitable for the IGCSE 4CP0 qualification. Each units contains:

  • PowerPoint slides for each lesson
  • Detailed lesson plans
  • Learning objectives and outcomes
  • Worksheets and homework activities with answers
  • End-of-unit Assessment test with answers
  • Other material and links to online resources

What people say...

I get offered probably every IGCSE, OCR and AQA resource pack out there and have seen most. I can tell you without doubt yours are the best. Your resources are head and shoulders above the rest.

Kieren Reynolds. CAS Master teacher and teacher, Henry Beaufort School

The lessons are designed to develop deep understanding so students master the mathematical concepts and techniques involved.

Heather Davis. Professional Development Lead, NCETM

Relevant Textbooks

Inside the Unit...

  • Download Free Sample 5.4mb

    Areas Covered

    • Lesson 1 Storage units and binary numbers
    • Lesson 2 Representation of numbers and characters
    • Lesson 3 Binary arithmetic
    • Lesson 4 Images
    • Download sample lesson above
    • Lesson 5 Sound
    • Lesson 6 Compression and data encryption
    • Lesson 7 Databases
    • Lesson 8 Assessment

    There are 7 worksheets, 7 homework tasks, and an examination-style assessment test, each with answers included in this unit.

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