Decomposition & Abstraction (Edexcel GCSE Computer Science): Exam Questions

A group of students are working together on a single maze game. The arrow keys control the character. When the character reaches the end of the maze without touching a wall, a happy sound is played. The game also displays a score.

Discuss the use of decomposition and abstraction in developing this game.

Your answer should include:

• a definition of each term

• the benefits each brings to the group of students

• an example of where each could appear in the program code.

Here is an algorithm that prints colours.

(i) State the name of the computational thinking technique used by the subprogram displayAll() to hide the logic of printing.

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(ii) State the name of the computational thinking technique used when separating logic into different blocks, such as the subprogram and the main program.

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