Probability and statistics worksheets, theoretical and experimental probability practice, and compound event activities for 6th, 7th and 8th grade math are all included in this Mini Mystery Detective pack. Students work out each probability from a spinner and from a table of real spins, then use their answers to eliminate suspects and unmask the villain. Perfect for a probability unit, math centers, early finishers, sub plans, test prep and homework, and completely no prep - just print and go.
Every answer is a fraction in its simplest form, so the pack doubles as fraction practice inside a probability unit. The early cases stay with one spin; the later cases spin the wheel twice, exactly as a textbook builds to compound events.
What's Inside
- Theoretical probability of a single event, read off an eight-section spinner
- The probability of an event NOT happening, and how the complement pairs with the event itself
- The probability of one outcome or another, from two sections of the same wheel
- Experimental probability from a table of real results, so relative frequency comes off data rather than a rule
- Compound probability across two spins: the same outcome twice, one outcome then another, and an outcome avoided altogether
- Every probability written as a fraction in its simplest form, with denominators of 8, 15, 25, 30 and 64
Ten detective cases along a seaside pier: The Prize Wheel, The Ice Cream Cart, The Big Top Mix-Up, The Hot Dog Stand, The Bandstand Spin, The Sweet Stall Swap, The Ferris Wheel Fix, The Seal Show Slip, The Unicycle Race and The Firework Finale.
Answer keys included for every case, along with a reference page students can keep beside them, a detective's case log to track each villain named, and a Probability Detective certificate for the students who close all ten.
What is a Mini Mystery Detective?
A Mystery Detective is a print-and-solve detective activity - like a classroom escape room without the locks or the prep. Every answer matches one suspect's ID badge, so each probability a student works out crosses another name off the list. The badge left unmatched belongs to the villain, so a wrong answer stops the mystery in its tracks and students find their own mistake before it ever reaches your marking pile.
When to Use This Resource
- Probability and statistics unit practice
- Math centers and small groups
- Morning work and bell ringers
- Early finishers and enrichment
- Substitute teacher plans
- Homework and spiral review
- Test prep and end-of-unit review
Grade Levels
Designed for 7th grade probability, where simple, experimental and compound events sit together in the standards. Also beneficial for 6th graders meeting chance for the first time, for 8th graders revisiting probability before high school statistics, and for advanced younger students.
Why Teachers Love Mystery Detectives
- Zero prep - print and hand out
- Self-checking, so students catch their own mistakes before you do
- Theoretical and experimental probability sit side by side on every page, which is where students confuse them
- The wrong answers are the mistakes students really make - reading the wheel when the question asked for the results, or dropping the word NOT
- Ten separate cases, so the pack covers a whole unit rather than a single sheet
- Prints clean in black and white
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