Back to School Math Mystery 4th Grade Activity: ‘School Invaders’

$4.95

  • The perfect Back to School Math Mystery 4th Grade activity!
  • Fun Theme: Save the school from the “School Invaders” in this engaging first-week icebreaker.
  • Easy Prep & Versatile: Includes printable PDF and Google Slides version for 1:1 classrooms.
  • Key Review Skills: Targeted diagnostic practice for rounding, place value, and multiplication facts.
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Description

Kick off the new year with high engagement using this Back to School Math Mystery 4th Grade activity! ‘The Case of the School Invaders’ is a high-engagement math review designed to act as a fun diagnostic tool, helping you assess student retention of rounding, place value, and computation skills.

It’s the perfect no-prep activity for the first week of school! 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: Just print the worksheets, staple, and go.
  • Google Slides Digital Version: 100% paperless! Simply assign in Google Classroom. (Students must be in ‘edit mode’ to type).
  • Easel by TPT: Complete the worksheets digitally for seamless online learning.

Back to School Math Mystery 4th Grade Activity

To defeat the invaders and save the school, students must unlock five clues by correctly solving these foundational review challenges:

  • Clue 1: Rounding (Rounding numbers to the nearest 10 or 100)
  • Clue 2: Place Value (Identifying the value of the underlined digit: Ones to Thousands)
  • Clue 3: Fluency (Multiplication Facts 2-12)
  • Clue 4: Addition (Standard Algorithm with 2-Digit and 3-Digit numbers)
  • Clue 5: Geometry (Identifying 2-D and 3-D Shapes)

Flexible for Any 4th Grade Classroom

Use this versatile First Week of School alternative for:

  • A fun “Ice Breaker” activity for the first week
  • A low-stress Diagnostic Assessment
  • Math centers or stations to establish routines
  • Homework or enrichment
  • A lifesaver for your sub-tub!

Pacing & Timing

This is a comprehensive review that can take anywhere from 30 minutes to 2+ hours, depending on your students’ skill level. We recommend pacing it by one clue at a time.

Common Questions for this 4th Grade Math Review

Q: Is this content new for 4th Graders?
A: No, and that is intentional! This packet reviews key 3rd Grade Standards (Rounding to 100, Multiplication Facts, Shapes) to help build confidence and allow you to see where students are starting from.

Q: Is there Geometry?
A: Yes! Clue 5 reviews 2-D and 3-D Shapes. This is a great way to check if students recall their shape vocabulary (e.g., cube, sphere, quadrilateral) from previous years.

Q: How does differentiation work with these?
A: That’s our secret weapon! Many of our stories are available for other grades, so you can “clue swap” with the 2-6 grade packs. We even have a blog post explaining how: learn how to differentiate here.

Other Grade Editions Available!

Love this ‘School Invaders’ theme? This mystery is also available for other grade levels (great for differentiation)!

A complete answer key and printable awards are included!

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