January Math Mystery 4th Grade Activity: ‘Jumbled January’

$4.95

  • The ultimate January Math Mystery 4th Grade activity!
  • High-engagement New Year Math Review: Features a fun “Eternal Monday” story hook and a video wrap-up to keep students motivated after winter break.
  • Easy Prep & Versatile: Includes a printable PDF and a Google Slides version for 1:1 or paperless classrooms.
  • Key 4th Grade Skills: Targeted practice for double-digit multiplication, long division, equivalent fractions, and multi-step word problems.
 
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Description

Shake off the winter break fog and save Mathhattan with this January Math Mystery 4th Grade activity! ‘The Case of the Jumbled January’ is a high-stakes math review designed to sharpen double-digit multiplication, long division, and equivalent fractions after the holidays.

It’s the perfect no-prep math activity to kickstart 2026! This resource is loaded with options, including an optional video hook and a NEW ending video (with voiceovers!) to wrap up the case!

Easy Prep for Print or Digital

This resource is designed to be low-prep for you and high-engagement for your students.

  • Printable PDF Version: “No Prep” design—just print, copy, and distribute!
  • Google Slides Digital Version: 100% paperless! Assign via Google Classroom or your preferred LMS. (Students must be in ‘edit mode’ to type).
  • Video Content: Includes an immersive Video Hook to set the stage and an Ending Video to reveal the culprit.

January Math Mystery 4th Grade Activity

To fix the “Eternal Monday” and repair the Calendar Generator, students must unlock five clues by correctly solving mid-year 4th Grade standards:

  • Clue 1: Multiplication (Double-Digit by Single-Digit Multiplication)
  • Clue 2: Long Division (3-Digit divided by 1-Digit Numbers – No Remainders)
  • Clue 3: Equivalent Fractions (Finding the missing numerator to complete equivalent pairs)
  • Clue 4: Number Theory (Identifying Factors, Multiples, and Prime Numbers)
  • Clue 5: Multi-Step Word Problems (Mixed Operations: +, -, x, ÷)

Flexible for Any 4th Grade Classroom

Use this versatile winter math review alternative for:

  • The first week back from Winter Break (New Year’s Activity)
  • Math centers or rotations
  • Spiral review or test prep
  • Your “early finisher” tub
  • Emergency sub plans

Pacing & Timing

This activity typically takes between 30 minutes and 2 hours. We recommend pacing it by giving students one clue at a time to keep the mystery alive and ensure everyone masters the math skills before moving on.

Common Questions for this 4th Grade Math Review

Q: Does the division clue include remainders?
A: Not for this mystery! Clue 2 focuses on Long Division (No Remainders) to help students regain confidence in the division algorithm (Divide, Multiply, Subtract, Bring Down) after the winter break.

Q: What types of “Number Theory” are covered?
A: Clue 4 covers Standard 4.OA.B.4. Students will need to distinguish between factors and multiples and identify prime vs. composite numbers. This is a crucial foundation for simplifying fractions later in the year.

Q: How does differentiation work with these?
A: That’s our secret weapon! This mystery is available for other grades. If you have students working below grade level, you can “clue swap” with the 2nd or 3rd-grade versions. Learn more about differentiation here.

Other Grade Editions Available!

The Jumbled January mystery is available for multiple grade levels:

A complete answer key and printable awards are included!

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