Bespoke, fully editable lesson for Pearson Edexcel International GCSE (9–1) Computer Science (4CP0): ED2.29 Coding binary, RLE and Caesar. Slides, worksheet and full answers.
Written for Topic 2 Programming (spec 2.3.3, 3.1.3, 3.3.3, 3.4.2 b). Everything is editable, so you can adapt it to your class.
What’s included- PowerPoint lesson (16 slides) with teacher notes on every slide
- Student worksheet (Word), ready to print or edit
- Answer sheet (Word) with mark-scheme style answers for every question
By the end of the lesson students can:
- Write Python that converts whole numbers from 0 to 255 between denary and 8-bit binary
- Code run-length encoding and decoding with count and value pairs
- Code the Caesar cipher with ord(), chr() and the modulus operator
Worksheet sections: A. Trace the binary converter; B. Run-length encoding; C. A Caesar program; D. Exam-style questions; E. Challenge
Every lesson includes- Learning goals and a starter question
- Clear explanations, diagrams and worked examples (Python 3 throughout, with Pearson pseudocode alongside)
- A quick check and a “your turn” task linked to the worksheet
- Exam-style questions with marks, and an exit ticket
- PowerPoint (.pptx) and Word (.docx), fully editable
- Works in PowerPoint and Google Slides
- Bright, clear GCSE design, consistent across the whole course
These are independent resources written for the Pearson Edexcel International GCSE (9–1) Computer Science specification (4CP0, Issue 1). They are not produced or endorsed by Pearson. Spec point numbers are Pearson’s, with a letter added where we split a statement across lessons.
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£4.99