Applying computational thinking lesson for IB Diploma Computer Science (first assessment 2027), with editable PowerPoint slides, a student worksheet and full answers. Students apply decomposition, abstraction and pattern recognition to a worked scenario and turn the result into a plan for a solution.

Written for the 2027 IB Computer Science guide, unit B1 Computational thinking. Everything is editable, so you can adapt it to your class.

What’s included

• PowerPoint lesson (11 slides) with speaker notes on every slide
• Student worksheet (Word), ready to print or edit
• Answer sheet (Word) with model answers for every question

B1.1.3 Applying computational thinking

By the end of the lesson students can:

• Explain how the four concepts are used in different areas of computer science
• Show that computational thinking solves problems without any programming
• Analyse a problem and plan a solution with all four concepts

Worksheet sections: A. Recall; B. Across computer science; C. The school club posts; D. Without a computer; 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.

More lessons in this series

• Previous lesson: Computational thinking – IB Computer Science lesson
• Next lesson: Flowcharts – IB Computer Science lesson

Last updated: November 2026.