Compression (Lossy and Lossless) | PPTs, Worksheets, Activities, MCQ Quizzes & Marking Schemes — Complete Lesson Pack | Cambridge IGCSE, AS & A-Level Computer Science

What’s included:

PowerPoint presentation clear step-by-step explanations with diagrams, visual examples and animations
Student worksheet structured exam-style questions on compression techniques
Classroom activity engaging individual/pair/group task with real-world compression scenarios
10-question MCQ quiz with full answer key
Full marking scheme with examiner tips and model answers

**** Learning outcomes students will be able to:****

Define lossy and lossless compression and explain the key differences
Explain how compression algorithms reduce file size without losing essential data
Describe Run-Length Encoding (RLE) with worked examples
Compare lossy and lossless methods for images, audio and video files
Evaluate which compression method is most appropriate for a given application
Calculate file sizes before and after compression

**** Syllabus alignment:****

Cambridge IGCSE Computer Science 0478 / 0984
Cambridge AS & A-Level Computer Science 9618
Suitable for Grade 9, 10 and 11
Covers the Data Representation chapter ideal for September/October teaching

Suggested lesson time: 60–90 minutes
All worksheets are fully print-ready
PowerPoint is fully editable adapt it to your class
Perfect for: classroom teaching, revision sessions, flipped learning, cover lessons and homework tasks

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