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A Level AQA

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Unit 3: Data representation

AQA Paper 2

Unplugged Unit
Perfect for lessons away from computers or workshops.
3

Inside the Unit...

Unit 3: Data representation

Download Free Sample 7.1mb

Areas Covered

This unit consists of six topics, each more substantial than a single lesson and intended to be covered over the course of a week.

  • Topic 1: Number systems
  • Topic 2: Bits, bytes and binary
  • Topic 3: Binary arithmetic
  • Topic 4: Bitmapped graphics
    Download free sample above
  • Topic 5: Representation of sound
  • Topic 6: Compression and encryption algorithms
  • End of unit assessment

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

Summary

The unit is subdivided into six topics, expected to be taught across roughly six weeks of lessons, plus a test, in order to fit with most school timetables. It is a theoretical unit covering the relevant sections of the AQA AS Level Computer Science specification. The unit is designed to allow AS students to be taught at the same time as students taking the full A Level.

Six topics in this unit cover data representation of numbers, text, images and sound, with the final topic explaining and giving examples of the uses of data compression and encryption. The beautifully illustrated PowerPoint slides, interactive style of the lesson plans, challenging and imaginative worksheets and graded examples in the homework will all help to ensure the class is fully engaged.

What's included in the toolkit?

Toolkit

The AS Level units have been written to satisfy the specification for Paper 1 and Paper 2 of the AQA 7516/7 Computer Science AS/A Level. Each unit contains:

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

What people say...

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I have all of your A Level and GCSE units as well as the A Level textbooks. I have found these materials absolutely invaluable in setting up and quickly establishing a new CS Department at a very traditional school which had not previously offered the subject.

Jackie MacDonald. Department of Computer Science, Glenalmond College

“
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I have a lot of low ability students who struggle to engage with education generally and these resources have tapped into their interests in an engaging but productive way. 

Alan Glasgow. Head of IT and Computer Science, Norton Hill School

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Inside the Unit...

Unit 3: Data representation

  • Download Free Sample 7.1mb

    Areas Covered

    This unit consists of six topics, each more substantial than a single lesson and intended to be covered over the course of a week.

    • Topic 1: Number systems
    • Topic 2: Bits, bytes and binary
    • Topic 3: Binary arithmetic
    • Topic 4: Bitmapped graphics
      Download free sample above
    • Topic 5: Representation of sound
    • Topic 6: Compression and encryption algorithms
    • End of unit assessment

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

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