Area & Perimeter Murder Mystery Maths Activity | KS3 Geometry Worksheets & Answers
£2.00
Turn your geometry lesson into a thrilling crime-solving investigation where every correct calculation uncovers a new clue! Students become detectives as they solve area and perimeter problems to identify the thief, their age, height, hair colour, gender and what they were carrying. 🕵️♂️📚
A priceless masterpiece, The Golden Rectangle, has been stolen from the Geometric Gallery, and only accurate maths can solve the mystery! 🖼️✨
Murder-mystery-area-and-perv2.pdf
🏛️ MEET THE SUSPECTS
Students begin by examining a gallery of suspects, each with different:
👤 Ages 📏 Heights 🎨 Hair colours 🎒 Items they were carrying 🚻 Gender
Every clue gradually eliminates suspects until only one remains.
Murder-mystery-area-and-perv2.pdf
🟦 CLUE 1 – HEIGHT OF THE THIEF
Calculate the area of squares to discover whether the thief was:
📏 Short 🙂 Average height 🏃 Tall 🦒 Very tall
Perfect for practising square area calculations and interpreting results.
Murder-mystery-area-and-perv2.pdf
🟩 CLUE 2 – WHAT WERE THEY CARRYING?
Students calculate the area of rectangles before adding their totals to reveal whether the thief carried:
💼 Briefcase 🎒 Backpack 👜 Tote Bag ❌ Nothing 👛 Purse
Murder-mystery-area-and-perv2.pdf
🔺 CLUE 3 – HAIR COLOUR
Find the area of triangles to uncover the thief’s hair colour:
👱 Blonde 🤎 Brown ❤️ Red 🖤 Black 🩶 Grey
Murder-mystery-area-and-perv2.pdf
🧩 CLUE 4 – MALE OR FEMALE?
Challenge students with compound shapes, adding multiple areas together to determine the thief’s gender. A fantastic way to build confidence with irregular shapes!
Murder-mystery-area-and-perv2.pdf
📐 FINAL CLUE – AGE OF THE THIEF
Learners solve a mixture of:
🟧 Squares 🟦 Rectangles 🔺 Triangles 🟩 Compound shapes
Their combined answers reveal the suspect’s age and allow them to identify the thief from the suspect table. 🎯
Murder-mystery-area-and-perv2.pdf
🧠 MATHS SKILLS COVERED
📏 Area of squares 🟦 Area of rectangles 🔺 Area of triangles 🧩 Area of compound shapes ➕ Multi-step calculations 📐 Perimeter interpretation 🔍 Mathematical reasoning 🕵️ Logical deduction
✅ FULL ANSWER KEY INCLUDED
Teacher pages provide worked solutions for every clue, making the activity ideal for independent work, paired investigations or whole-class review. ✔️📚
Murder-mystery-area-and-perv2.pdf
🌟 Perfect for:
🇬🇧 KS3 Maths 📐 Geometry units 🕵️ Mystery maths lessons 🎯 Area & perimeter revision 👥 Partner investigations 🏫 Maths centres 📋 Cover lessons 🏠 Homework 🎉 End-of-topic activities ⭐ Early finishers
📄 14 PAGES • PRINT & GO
🕵️ Exciting detective storyline 📏 Progressive geometry challenges 🧩 Compound shape practice 🔍 Elimination-style suspect investigation 🧠 Critical thinking throughout ✅ Complete teacher answer key
🕵️♀️📐 CALCULATE • INVESTIGATE • ELIMINATE • SOLVE THE HEIST! 🔍✨
A highly engaging KS3 Area & Perimeter Murder Mystery that transforms geometry practice into an unforgettable classroom challenge.