Compression – A Level Computer Science 9618 lesson

Information representation – A Level CS 9618 (10 lessons)

10 ready-to-teach lessons for Cambridge International AS & A Level Computer Science (9618): Information representation. 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 complete, ready-to-teach bundle for Cambridge International AS & A Level Computer Science (9618): Section 1 Information representation, in 10 bespoke lessons. 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 £49.90 if bought lesson by lesson. ## What's inside - **P1.01** Binary prefixes and number bases - **P1.02** Converting between number bases - **P1.03** BCD and hexadecimal in use - **P1.04** One's and two's complement - **P1.05** Binary addition, subtraction and overflow - **P1.06** Character sets - **P1.07** Bitmap images - **P1.08** Vector graphics - **P1.09** Sound - **P1.10** Compression ## Why teachers use it - Mapped lesson by lesson to the syllabus, so coverage is easy to track - Cambridge pseudocode, as in the 2027–2029 pseudocode guide, with Python 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 Cambridge International AS & A Level Computer Science syllabus (9618) for examination in 2027, 2028 and 2029. They are not produced or endorsed by Cambridge University Press & Assessment. Syllabus point numbers are our own numbering of the syllabus statements. Last updated: November 2026.