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Computer Science Revision

Programming, algorithms, data representation, networks, and computer systems.

GCSE Computer Science revision is much clearer when theory and programming are tied to the specification, and these lessons follow AQA 8525 across both exam papers. The course covers computational thinking and programming alongside computing concepts, including algorithms, data representation, computer systems, networks, cyber security, databases and the ethical impact of technology.

Each lesson explains one topic in plain, exam-ready language, with worked examples for the programming and algorithm content. Turn any lesson into a quiz or flashcard deck to test recall, and ask the built-in tutor to trace through an algorithm, convert between binary and hex, or explain how a concept like packet switching actually works.

Lessons

Fundamentals of algorithms

4

Programming

5

Fundamentals of data representation

8

Computer systems

5

Fundamentals of computer networks

4

Cyber security

1

Relational databases and SQL

1

Support and exam skills

3

Frequently asked questions

It is assessed by two written papers, each 1 hour 30 minutes and worth 50% of the GCSE. Paper 1 focuses on computational thinking and programming skills, and Paper 2 focuses on computing concepts.

AQA sets programming questions using a standard pseudo-code in the exam, and schools usually teach a language such as Python alongside it. Revising the logic and the standard pseudo-code matters more than any single language.

Break each concept into a short definition, an example and a reason it matters, then test yourself with quick recall questions. Topics like networking, data representation and cyber security reward spaced repetition, which the flashcards here are built for.

It helps but is not essential. Some topics use maths, such as binary and hexadecimal conversion and Boolean logic, but most marks come from understanding concepts and writing clear algorithms. Logical thinking matters more than advanced maths.

Yes. Reading every public lesson is free, and a free account lets you generate quizzes and flashcards from them. Upgrading only removes the monthly creation limit.

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