Make circle area revision fun and memorable with this Area of a Circle Joke Codebreaker, perfect for KS3 Maths, Year 7–9, revision sessions, starters, homework, or cover lessons.
Students calculate the area of each circle to 1 decimal place (using radius or diameter), then use their answers to decode a hidden joke. This adds a motivational puzzle element while reinforcing accuracy with π and essential formula recall.
The worksheet includes A–Z questions across two full pages (pages 1–2), each showing a circle with a labelled radius or diameter. A complete answer grid (pages 3–6) reveals each numerical solution and the final joke, making marking quick and easy.
This activity builds fluency in:
• identifying radius vs. diameter
• using the area formula
𝐴=𝜋𝑟2
• rounding to one decimal place
• checking accuracy through codebreaking
Great for mixed-ability classes and retrieval practice.
What’s Included
◆ A–Z Area of a Circle codebreaker worksheet
◆ Circles labelled with radius or diameter (to 1 dp accuracy)
◆ Hidden joke reveal for added engagement
◆ Full worked-answer pages for easy marking
◆ Print-ready, low-prep PDF
Why Teachers Love It
• ✔ Highly engaging alternative to standard practice
• ✔ Supports fluency with formula recall and rounding
• ✔ Ideal for starters, revision, homework or cover
• ✔ Works well with all ability levels
If your students enjoy this resource, please consider leaving a review—your feedback helps me continue creating high-quality maths activities.
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Please be aware that I believe 3.14 is used for the area calculation, not pi. This is not clear on the resource and it meant our answers were all out be a few decimal points before we realised this.
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£1.50