Pumpkin CSI: The Pumpkin Patch Break-Out
$5.00
Six suspects. Four clues. One guilty gourd!
Turn fall learning into a detective mystery with this printable Pumpkin CSI STEM activity for grades 3–5! Kids investigate a broken fence, muddy tracks, eyewitness evidence, and a mysterious rind fragment while practicing measurement, science, and deductive reasoning.
Includes a ready-to-use printable investigation, teacher guide, answer key, optional real-pumpkin activity, and advanced challenges for older students.
Low prep, lots of critical thinking, and one very suspicious pumpkin!
You may also like…
Description
This post may contain affiliate links.
Six suspects. Four clues. One guilty gourd!
There’s been a break-out at Farmer Green’s pumpkin patch, and your students are on the case!
This printable Pumpkin CSI STEM mystery turns fall learning into a detective investigation. Students examine six pumpkin suspects, analyze measurements, interpret physical evidence, and use deductive reasoning to discover which mischievous pumpkin escaped.
Designed for grades 3–5, this engaging activity combines math, science, and critical thinking in a fun, low-prep mystery.

What’s Included
- Illustrated lineup of six pumpkin suspects
- Case file with an initial prediction
- Broken Fence measurement investigation
- Muddy Trail circumference investigation
- Eyewitness observation clue
- Recovered Rind Fragment evidence
- Final detective verdict and reasoning
- Teacher guide and answer key
- Instructions for an optional hands-on investigation using real pumpkins
- Advanced challenge ideas for older or more experienced students
Skills Students Practice
- Height and circumference comparisons
- Measurement ranges and data analysis
- Scientific observation and classification
- Logical reasoning and problem-solving
- Evaluating evidence
- Drawing and defending conclusions
Two Ways to Investigate
Print-and-Go Mystery: Use the illustrated suspects and prepared evidence for an easy fall STEM lesson. No real pumpkins required!
Hands-On Pumpkin Investigation: Gather real pumpkins, have students collect measurements, and customize the same four clues for an interactive science experience.
Easy to Differentiate!
The main investigation is ideal for grades 3–5, with optional advanced challenges that encourage students to explore measurement uncertainty, question scientific assumptions, and defend their conclusions.
Perfect for homeschool lessons, elementary classrooms, STEM centers, fall science activities, math enrichment, and October learning.
Can your young detectives crack the case? Grab your pencils and start investigating. The guilty gourd is still on the loose!
Recommended Grades: 3–5
Time: Approximately 20–35 minutes for the printable mystery
Preparation: Minimal for the printable version; additional setup for real pumpkins
Format: 15-page Digital printable PDF
Get this and hundreds more ideas in the Creative Teacher Club Membership!







