OCR GCSE Computer Science J277 – OC2.48 Maintainable code – Lesson & Worksheet

Bespoke, fully editable lesson for OCR GCSE (9–1) Computer Science (J277): OC2.48 Maintainable code. Slides, worksheet and full answers.

Written for J277/02 Computational thinking, algorithms and programming, section 2.3 Producing robust programs (spec 2.3.1.3). Everything is editable, so you can adapt it to your class.

What’s included

• PowerPoint lesson (14 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

OC2.48 Maintainable code

By the end of the lesson students can:

• Explain why programs need to be easy to maintain
• Use sub programs, meaningful names, indentation and comments to make code maintainable
• Refine hard-to-read code into maintainable ERL and Python

Worksheet sections: A. Key words; B. Find the problems; C. Comment and structure; 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 the OCR Exam Reference Language alongside)
• A quick check and a “your turn” task linked to the worksheet
• Exam-style questions with marks, and an exit ticket

Format

• 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 Cambridge OCR GCSE (9–1) Computer Science specification (J277, version 3.1). They are not produced or endorsed by OCR or Cambridge University Press & Assessment. Spec point numbers are our own numbering of the specification statements.