A complete, exam-focused revision and practice pack covering every strand of OCR GCSE Computer Science J277, Component 2: Computational Thinking, Algorithms and Programming. Fully aligned to the official OCR Exam Reference Language throughout — no AQA, Cambridge, or generic pseudocode substitutions.

59 pages covering:

Computational thinking & algorithm design (abstraction, decomposition, flowcharts)
Variables, constants, data types, input/output
Arithmetic, relational and Boolean (logical) operators
Selection (IF, SWITCH/CASE) and iteration (FOR, WHILE, DO…UNTIL, nested loops)
Arrays (1D and 2D) and string manipulation
Procedures and functions
Validation and authentication
Dedicated trace table practice (variables, selection, loops, nested structures, arrays, Boolean expressions) — fully worked
Dedicated testing & debugging section (syntax, logic and runtime errors; normal, boundary, erroneous and invalid test data; test plans)
A 30-mark mixed exam-style paper with full mark scheme

Every topic follows a consistent A–G structure: Knowledge Recall, Worked Example, Guided Practice, Independent Practice, Exam-Style Questions (with mark allocations), Challenge Questions, and complete Answers — making it ideal for lessons, homework, cover work, revision sessions, or independent GCSE study.

Print-ready Word (.docx) format, fully editable so you can adapt it to your scheme of work.

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