GCSE Computer Science: Computational Thinking Guide

What is computational thinking?

Computational thinking is a set of problem-solving skills used to break down and solve problems in a way that a computer, or a person, can work through systematically.

Decomposition

Decomposition means breaking a large, complex problem down into smaller, more manageable sub-problems that are easier to understand and solve individually.

Abstraction

Abstraction means focusing on the important details of a problem while ignoring irrelevant information, making the problem simpler to work with without losing what actually matters to solving it.

Pattern recognition and algorithmic thinking

Pattern recognition involves spotting similarities between a new problem and ones already solved. Algorithmic thinking then involves designing a clear, logical series of steps to solve the problem.

Common mistakes

• Confusing decomposition (breaking a problem down) with abstraction (removing irrelevant detail).
• Providing a solution without showing the systematic thinking behind it.
• Treating computational thinking as only relevant to writing code, rather than problem-solving generally.