Teacher Pack: Unit 2.3 Producing Robust Programs J277 (from 2020)

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The resources within this Teacher Pack cover all aspects of the specification in relation to OCR GCSE Computer Science J277 (from 2020) component 2.3.


It includes:


·   Teaching PowerPoint (includes checkpoint questions and answers)


·   Student PowerPoint (Includes checkpoint questions, but omits the answers)


·   Homework/Classwork Activities (+ mark schemes)

  • Authentication
  • Maintainability
  • Testing


·   End of unit test (+ mark scheme)


Content Covered:


Defensive design considerations:

  • Anticipating misuse
  • Authentication

Input validation

Maintainability:

  • Use of sub programs
  • Naming conventions
  • Indentation

Commenting


The purpose of testing

Types of testing:

  • Iterative
  • Final/terminal

Identify syntax and logic errors

Selecting and using suitable test data:

  • Normal
  • Boundary
  • Invalid
  • Erroneous

Refining algorithms