A COMPLETE 60-minute lesson pack for Cambridge IGCSE (9-1) Computer Science (Syllabus 0984) - covering Number System Conversions and Calculations, fully aligned to the Data Representation topic. Builds directly on Lesson 1 (Binary & Hex).

Everything you need for a fully-resourced, exam-ready lesson:

PowerPoint Presentation (15 slides)

• Modern Slate & Amber design — consistent with the series
• Full lesson flow: Retrieval starter → Objectives → Conversion routes map → Binary addition rules → Column addition method → Overflow → Binary shifts → Worked examples → Guided practice → Independent practice → Extension → Misconceptions → Exit ticket → Summary
• Interactive column addition table showing carry rows
• Visual overflow diagram with lost-bit indicator
• Shift diagrams with before/after and multiplier labels

Student Worksheet (14 questions, 6 pages)

• Built-in binary addition rules reference table
• Sections A–D: conversions, binary addition, binary shifts, application
• Answer space scaled to mark allocation
• Clean page breaks — every section starts fresh, no orphaned questions
• Extension: multi-step challenge combining all three skills

Full Answers & Mark Scheme (5 pages)

• Fully worked column addition with carry rows shown
• M / A / B mark labelling matching IGCSE conventions
• Green highlighted success lines for easy marking

Exam-Style Practice Paper (8 pages, 24 marks, 30 minutes)

• 4 structured Paper 1 questions with IGCSE command words
• Covers: binary↔denary, binary↔hex, column addition, overflow, binary shifts
• Mark scheme on dedicated page — never mixed with student paper

LEARNING OBJECTIVES (aligned to 0984 syllabus)

• Convert fluently between denary, binary and hexadecimal in both directions
• Perform binary addition of two 8-bit numbers including carrying
• Detect and explain overflow in binary addition
• Perform binary left and right shifts and state their effect on value
• Apply number system skills to exam-style structured questions

SUITABLE FOR

• Cambridge IGCSE (9-1) Computer Science - Syllabus 0984
• Cambridge IGCSE Computer Science - Syllabus 0478 (fully compatible)
• AQA / OCR / Edexcel GCSE Computer Science (number systems topic)
• Ages 14–16 · KS4 · Difficulty: Easy
• Prerequisite: Lesson 1 — Binary and Hexadecimal Number Systems

binary addition, binary shifts, overflow, Cambridge IGCSE Computer Science,
0984, data representation, number systems, hex conversion, carry bit,
GCSE computing, left shift right shift, binary arithmetic, denary to binary,
IGCSE 0478, binary overflow