Computer Science – 4CP0

Pearson Edexcel International GCSE (9–1) Computer Science (4CP0) is an internationally recognised qualification that develops computational thinking, programming and problem-solving skills. The specification covers algorithms, decomposition and abstraction, programming, data representation and storage, encryption, computer systems such as hardware, software and logic, networks and network security, and the impact of emerging technologies. Students are assessed through two papers: Paper 1, Principles of Computer Science, a written examination, and Paper 2, Application of Computational Thinking, a practical paper in which students design, write, test and refine programs on screen. (Pearson Edexcel International (opens in a new tab))

Programming sits at the centre of Pearson Edexcel IGCSE Computer Science. In Paper 2, students apply computational thinking by writing, testing and debugging code to solve problems, so regular programming practice is essential. Working with constructs, data structures, subprograms and input/output helps students turn an algorithm into a working program, and the same logical, step-by-step thinking supports Paper 1 questions on algorithms, logic and data representation.

• Design and refine algorithms using decomposition and abstraction.
• Write programs using sequence, selection and iteration.
• Use variables, data types and data structures such as arrays.
• Structure code with subprograms, parameters and return values.
• Handle input and output, including validating user input.
• Test, debug and improve programs to meet a set of requirements.