Description
Make math spooky and fun with this Halloween Math Mystery 4th Grade activity: The Case of the Jumpy Jack-O-Lanterns. Students review place value, growing patterns, word problems, division facts, and multi-digit addition and subtraction with regrouping.
Easy prep! Just print and solve, or go paperless with the Google Slides option provided within your download. An optional video hook is included for introducing the case, and a bonus ending video wraps up the case.
A Halloween Math Mystery 4th Grade Review
The jack-o-lanterns have gone jumpy! Students must use their math skills to unlock clues, then use their powers of deduction to narrow down the list of suspects to find the culprit and the cure.
Math Skills Required to Unlock Clues
There are five clues to crack to solve the mystery:
- Clue 1: Value of the underlined digit (up to ten thousands place value)
- Clue 2: Growing patterns (find the rule and continue the sequence)
- Clue 3: Word problems (addition, subtraction, multiplication)
- Clue 4: Division (Facts 1-12, and a few ending in zeroes divided by a single digit)
- Clue 5: Addition & Subtraction with large numbers (regrouping required)
Students must use critical thinking skills to work out what each clue is telling them to eliminate from the list of suspects.
What is Included in this Math Mystery?
- Video Hook and Ending Video: An optional video hook to set the scene, plus a bonus ending video to wrap up the case.
- Printable PDF Version: No prep required. Print the student pages, staple or place in a folder, and your students are set to go.
- Google Slides Digital Version: Go paperless and assign in Google Classroom. (Students must be in edit mode to type.)
- Editable Suspects List: Change the character and cure names to alter the final mystery outcome. Two alternative pre-made lists are also included for a quick swap.
- Printable Awards to celebrate your detectives.
- Complete Answer Key.
Why Teachers and Students Love It
For Teachers: This resource is designed to be low-prep for you and high-engagement for your students. Have the video hook ready on an IWB, iPad, or computer screen, hand out the pages, and the lesson runs itself.
For Students: This Halloween math mystery 4th grade feels like a game. Every correct answer brings them one clue closer to solving the case.
Who This Halloween Math Mystery 4th Grade Is For
This edition is written for 4th grade students. It is suitable for independent, pairs, or group work. Use it for:
- A fun activity for Halloween week
- Math centers or stations
- Sub tubs
- Early finisher tasks
- Homework or enrichment
Pacing and Timing: Time to complete will vary anywhere between 30 minutes and 2 hours or more. It mainly depends on how familiar your students are with the math mystery format, and how difficult they find the math skills covered in the clues. Please check the skills above to help determine suitability for your class.
I recommend pacing this activity by giving students one clue at a time. Once the whole class has completed a clue, move on to the next clue, either within the same lesson or in the next math session. New math content presented? Make a lesson out of it by modeling the math before diving into the clue. I like to say, “We must learn something new before attempting the next clue.” If you use the clues in a different order, keep the suspect list away from students until all five clues are complete.
Easy Grade-Level Differentiation
The Case of the Jumpy Jack-O-Lanterns is also available for the other grade levels listed below. If you would like more challenging math skills, select a higher grade level version of this mystery.
The clues are the same in the other grades when the mystery story is the same; the math is what is different between the grade packs. I designed the mysteries this way so you can differentiate the task within your classroom without your students knowing they might have an easier or harder version than their peers. You can also “clue swap” across grades (except for the 1st grade version) as long as the clue numbers match. This blog post explains how: learn how to differentiate here.
There are many different mystery titles in my store if you would like more Math Mysteries with different clues and solutions.
Skills and Common Core Standards
- 4.NBT.A.1 – Recognize that a digit in one place represents ten times what it represents in the place to its right (Clue 1)
- 4.OA.C.5 – Generate a number or shape pattern that follows a given rule (Clue 2)
- 4.OA.A.3 – Solve multistep word problems posed with whole numbers using the four operations, including problems in which remainders must be interpreted (Clue 3)
- 4.NBT.B.6 – Find whole-number quotients and remainders with up to four-digit dividends and one-digit divisors (Clue 4)
- 4.NBT.B.4 – Fluently add and subtract multi-digit whole numbers using the standard algorithm (Clue 5)
Looking for more? The ‘Jumpy Jack-O-Lanterns’ mystery is part of the 4th Grade Math Mystery Bundle, if you’d like a full set of resources in one place.
Not sure what a math mystery is? Read What is a Math Mystery? on my blog.
Add extra motivation with the free Detective Rank Chart and Mystery Record. New to math mysteries? Try the free Case of the Super Bad Superhero first.
FAQ
What skills are covered?
The value of the underlined digit (up to ten thousands), growing patterns, word problems (addition, subtraction, multiplication), division facts 1-12 plus a few numbers ending in zeroes divided by a single digit, and addition and subtraction with large numbers (regrouping required).
Can I change the outcome?
Yes. The editable suspects list lets you change the character and cure names, and two alternative pre-made lists are included for a quick swap.
How does differentiation work with these?
The clues match across the grade editions of the same story, so you can “clue swap” between the packs listed above (except for the 1st grade version) as long as the clue numbers match. This blog post explains how: learn how to differentiate here.
Technical issues? See my Troubleshooting Tips and FAQ page, or email me at jjresourcecreations@gmail.com.
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Thank you!
Jacqui J.
Mrs. J’s Resource Creations








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