Equivalent fractions worksheets and fraction practice fill this 4th grade math CSI Mini Mystery Detective pack of ten no prep math activities with a bakery theme. They cover the whole equivalent fractions unit, including the missing numerator or denominator, simplifying, and tenths and hundredths. Use these fraction activities for math centers, morning work, small group review, homework and early finishers. There's an answer key for every case.
Every case is set in a bakery, with cakes and pies cut into equal slices. Students see the same amount cut into different sized pieces on every page. Students find each missing number, match it to a suspect and cross that name off, which means they check their own multiplying as they work. Each page is self-checking.
What's Inside
- Ten one-page detective cases on equivalent fractions, each with an answer key
- Cases that build from the missing numerator to the missing denominator, working backwards, tenths and hundredths, and mixed pages
- A reference page showing how to multiply up, divide down, and why adding the difference gives the wrong answer
- A contents page, teacher instructions, a detective case log and a certificate of achievement
- 30 black and white pages, ready to print
The Cases
-
The Sliced Birthday Cake - finding the missing numerator
-
The Missing Cherries - missing numerators with bigger numbers
-
The Wobbly Wedding Cake - finding the missing denominator
-
The Wrong Candles - more missing denominators
-
The Sunken Sponge - working backwards by dividing
-
The Empty Pie - simplifying to find the missing number
-
The Sprinkle Spill - tenths and hundredths
-
The Leaning Tower - missing number on the top or bottom
-
The Heart Mix-Up - multiplying up and dividing down
-
The Grand Opening - mixed review
When to Use This Resource
The cases move from the missing numerator to the missing denominator, then working backwards, tenths and hundredths, and mixed pages. You can hand out one case at a time through the unit, or pull a single page when a group needs more practice. The early cases suit students meeting equivalent fractions for the first time, and the later ones stretch a class that is ready to work in both directions. You can also use it for guided math, sub plans, test prep and end of year fraction review.
Grade Levels
Written for 4th grade, where equivalent fractions and tenths to hundredths are taught. The first cases also suit 3rd graders learning simple equivalent fractions, and the whole pack makes a quick review for 5th graders before adding fractions with unlike denominators.
Why Teachers Love Mystery Detectives
- Print and hand out
- Students check their own multiplying with the suspect list
- Leveled cases for different students
- A bakery story with cakes, pies and cherries
- Black and white pages
Want more cases like these?
Follow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for elementary classrooms.
https://www.teacherspayteachers.com/Sellers-Im-Following/Add/Kiwiland
