Practice: subprograms – Edexcel IGCSE Computer Science lesson

Programming Part 2 – Edexcel IGCSE Computer Science (18 lessons)

18 ready-to-teach lessons for Pearson Edexcel International GCSE Computer Science (4CP0): Programming Part 2. Every lesson has editable PowerPoint slides, a student worksheet and full answers, and the bundle costs less than buying the lessons one by one. A ready-to-teach bundle for Pearson Edexcel International GCSE (9–1) Computer Science (4CP0): Topic 2 Programming, part 2 of 2, lessons ED2.20 to ED2.37. Every lesson comes with: - **Editable PowerPoint slides**: goals, starter, explanations, diagrams, worked examples, a quick check, a task and an exit ticket, with teacher notes - **Student worksheet (Word)**: recall, applied practice and exam-style questions with marks - **Answer sheet (Word)**: full mark-scheme style answers Worth £89.82 if bought lesson by lesson. ## What's inside - **ED2.20** Built-in and library subprograms - **ED2.21** Procedures and parameters - **ED2.22** Functions and return values - **ED2.23** Local and global variables - **ED2.24** Practice: subprograms - **ED2.25** Validating input - **ED2.26** Test plans and test data - **ED2.27** Reading text files - **ED2.28** Writing text files - **ED2.29** Coding binary, RLE and Caesar - **ED2.30** Evaluating and improving programs - **ED2.31** Paper 2 practice: amending code - **ED2.32** Paper 2 practice: searches and sorts - **ED2.33** Paper 2 practice: completing programs - **ED2.34** Paper 2 practice: data files - **ED2.35** Paper 2 practice: written questions - **ED2.36** Timed Paper 2 practice 1 - **ED2.37** Timed Paper 2 practice 2 The rest of Topic 2 Programming is in the other part, sold as a separate bundle. ## Why teachers use it - Mapped lesson by lesson to the specification, so coverage is easy to track - Python 3 throughout, with Pearson pseudocode alongside - Fully editable: adapt to your class, timings and school template - Works for teaching, revision, cover lessons and homework These are independent resources written for the Pearson Edexcel International GCSE (9–1) Computer Science specification (4CP0, Issue 1). They are not produced or endorsed by Pearson. Spec point numbers are Pearson's, with a letter added where we split a statement across lessons. Last updated: November 2026.