IB Computer Science 2027 – B2.5.1 File processing – Lesson & Worksheet

Bespoke, fully editable lesson for the new IB Diploma Computer Science syllabus (first assessment 2027): B2.5.1 File processing. Slides, worksheet and full answers.

Written for the 2027 IB Computer Science guide, unit B2 Programming. Everything is editable, so you can adapt it to your class.

What’s included

• PowerPoint lesson (12 slides) with speaker notes on every slide
• Student worksheet (Word), ready to print or edit
• Answer sheet (Word) with model answers for every question

B2.5.1 File processing

By the end of the lesson students can:

• Explain why programs need to store data in files
• Open, read, write and append to text files in Python
• Handle file errors and close files safely

Worksheet sections: A. Recall; B. Predict the file; C. Write the code; D. Handle errors; E. Challenge

Every lesson includes

• Learning goals and a starter question
• Clear explanations with worked examples (Python where code is needed)
• A quick check and a “your turn” task linked to the worksheet
• An exit ticket

Format

• PowerPoint (.pptx) and Word (.docx), fully editable
• Works in PowerPoint and Google Slides
• Calm pastel design, consistent across the whole IB course

These are independent resources written for the IB Diploma Programme Computer Science guide (first assessment 2027). They are not produced or endorsed by the International Baccalaureate Organization.