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Subroutines, Parameters, Return Values & Scope

AQA 75174.1.10–4.1.14A-levelLesson packSubscription
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  • 36 marks
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Question types: short answer, multiple choice, matching, true or false, multi-part.

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About this resource

AQA A-level Computer Science (7517) Paper 1, 4.1.1.10–4.1.1.14 — subroutines (procedures/functions), using parameters to pass data and build an interface, returning values, and contrasting local variables with global variables.

27 slides.

Lesson outline

  1. Do Now — Retrieval
  2. I-Do: What Is a Subroutine?
  3. Hinge Check — Subroutine Definition
  4. I-Do: The Advantages of Using Subroutines
  5. I-Do: Calling a Subroutine and Getting a Value Back
  6. The Call Stack
  7. Hinge Check — Advantages of Subroutines
  8. We-Do — Spot the Case for Decomposition
  9. I-Do: Parameters and the Interface
  10. I-Do: Arguments Flow Into Parameters
  11. Hinge Check — Parameter vs Argument
  12. I-Do: Worked Trace — Multiple Parameters
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