This comprehensive perimeter and circumference pack is ideal for KS3, GCSE Foundation Maths, and Functional Skills Level 1–2. It includes a full perimeter lesson PowerPoint, a circumference codebreaker activity, and a perimeter murder mystery challenge. Together, these resources provide clear teaching, worked examples, independent practice, and two engaging problem-solving activities that consolidate key skills.
The Perimeter Lesson PowerPoint introduces perimeter through clear explanations and step-by-step modelling. It covers squares, rectangles, triangles (including equilateral and isosceles), compound shapes, and real-life perimeter problems. The lesson includes a 60-second starter, guided examples, “You Try” questions, exam-style tasks, and summary slides, making it suitable for whole-class teaching or revision.
The Circumference Codebreaker Worksheet requires students to calculate circumference to one decimal place using the formula C=πd. Each correct answer reveals a corresponding letter in a coded message. This activity supports fluency with radius/diameter conversion and rounding, and includes a full answer sheet.
The Perimeter Murder Mystery challenges students to identify who committed a crime, where it happened, and on which day by solving perimeter problems. Learners evaluate the truth of statements made by suspects, check calculations for different locations, and verify statements involving perimeter. This activity promotes reasoning, accuracy and application of perimeter knowledge in a fun, puzzle-based format.
What’s Included:
• Full perimeter lesson PowerPoint (over 60 slides)
• Stopwatch starter activity
• Worked examples and guided practice
• Perimeter of squares, rectangles, triangles and compound shapes
• Circumference of a circle, radius and diameter recap
• Circumference codebreaker worksheet and full answers
• Perimeter murder mystery activity with complete solutions
• Exam-style questions with worked answers
Skills Covered:
• Calculating perimeter of simple and compound shapes
• Using properties of triangles
• Converting units
• Finding circumference using
C=πd
• Converting between radius and diameter
• Rounding to 1 decimal place
• Problem solving and reasoning
Perfect For:
• KS3 Maths
• GCSE Foundation revision
• Functional Skills Level 1–2
• Cover lessons
• Homework or independent practice
• Retrieval and consolidation
This is a ready-to-use pack that reinforces perimeter and circumference through clear instruction and engaging activities. If you find the resource useful, please consider leaving a review to support the creation of more high-quality maths materials.
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