Iteration and Selection Programming Practice — AS/IGCSE Level Pseudocode Worksheet + Marking Scheme

A complete, exam-style worksheet pack covering iteration and selection for AS/A Level Computer Science — ideal for classwork, homework, or revision.

What’s included:

Student Worksheet (5 pages) — 15 real-world programming tasks covering FOR loops, WHILE loops, MOD, compound conditions, accumulators, counters, and CASE statements, with clear scenarios
Teacher Answer Booklet (10 pages) — full pseudocode model answers written in standard AS Level pseudocode conventions (FOR…TO…NEXT, IF…THEN…ELSE…ENDIF, CASE OF…OTHERWISE…ENDCASE, MOD, UCASE()), plus a detailed point-by-point marking scheme for every question (77 marks total) with a mark summary table

Topics covered:

Count-controlled and condition-controlled iteration
Simple and compound selection
The MOD operator (odd/even, divisibility tests)
Accumulators and running totals
Finding maximum/minimum values
Multi-way selection using CASE statements
Combined tasks integrating iteration, selection, and counters

Why teachers will like it:

Progresses from simple loops through to combined iteration + selection + CASE challenges
Each question includes clear success criteria so students know exactly what to include
Ready-to-mark answer scheme saves prep time — perfect for self-marking, peer-marking, or quick teacher assessment
Editable Word format (.docx) — easy to adapt tasks, swap the target language, or adjust difficulty
Great for exam-board pseudocode practice (transferable to Python, VB, or written exam pseudocode)

Suitable for: AS/A Level Computer Science (Years 12–13), also useful as extension/challenge material for GCSE higher-ability students.

Format: 2 x Word documents (.docx)