Circumference of a Circle Codebreaker | KS3 & Functional Skills Maths | Fun Revision Activity + Answ

This Circumference of a Circle Codebreaker is a fun, engaging way for students to practise calculating circumference to 1 decimal place while revealing a hidden message. Learners complete each circumference question, match their answers to the code table, and uncover the punchline to why the archaeologist was upset about his career.

Perfect for KS3 Maths, GCSE Foundation, and Functional Skills Level 1–2, this activity reinforces use of the formula C = πd / C = 2πr, rounding skills, and problem-solving. Ideal as a warm-up, revision task, homework or an end-of-lesson challenge.

Includes:
• Full circumference codebreaker activity
• Answer table for self-checking
• Complete answer sheet with solved message
• Great for retrieval practice, fluency and engagement

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