Science of Curiosity

Forensic Entomology Lesson: Slides, Notes, Activity, Review

Teach your students about Forensic Entomology! Learn to measure fly maggots and figure out the post-mortem interval (time since death).  Students learn from 12 interactive Google Slides, recording what they learn on the provided Notes Sheet. The Google Slides are student independent – no direct instruction is needed.



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Teach your students how to be Forensic Entomologists! Learn to measure fly maggots and figure out the post-mortem interval (time since death).

Resource includes:

  • Learn Forensic Entomology Google Slides: 12 interactive slides that teach everything students need to know. No direct instruction needed, giving you freedom to help students that need you. Slides are interactive and engaging!
  • Key for Learn Entomology Google Slides: all of the interactive elements on these slides are completed/filled in. You can use this slide set if you prefer to teach via direct instruction
  • Student Notes Sheet: completed as students go though the Learn Entomology slides
  • Student Notes Key: comprehensive Key of the notes filled out
  • Forensic Entomology Activity: Seventeen interactive Google Slides challenge students with five cases to solve. They have a jar of maggots which they drag to a digital ruler and measure. Using the provided fly growth chart, case information, and temperature data, they figure out the post mortem interval for each case.
  • Review Questions: Ten multiple choice review questions on a self grading Google Form. Use as a review or an assessment!


Students will learn:

  • The life cycle of a fly
  • Important forensic details about four species of flies
  • How temperature impacts the life cycle of a fly
  • How to measure maggots / pupa to figure out the age of a maggot
  • How to use a fly growth chart to determine the PMI


Interactive Google Slides build up student’s skills, asking them to:

  • Drag and drop elements
  • Circle the right answer
  • Fill in the blank
  • Complete short answer questions


This resource is appropriate for even more sensitive students – there are no actual photos of decaying corpses.


NO PREP! Full answer keys are provided for the learning slides and the activity slides.


A teacher guide is included with tips for how to best use the resource, sharing the slides, and ideas to make grading easier!

Click here to see a preview of the Forensic Entomology notes and activity.

Five Stars!

Here is what some happy teachers are saying about the Forensic Entomology notes and activity.

I LOVE this resource! I use it each year without fail.            – Josephanie T.           April 3, 2024

This was a great addition to my forensics unit. Students were thoroughly engaged.           – Lauren S.           April 28, 2023

I really love the self-guided learning slides and the activity. It makes easy for prep and I can focus on going around to help students.            – Ms Montgomery             January 5, 2022

I first purchased this activity as I struggled to create a more engaging entomology for students learning remotely. IT IS WONDERFUL! The interactive nature of the activity keeps students engaged as they learn to identify stages of development, estimate PMI, and make adjustments for temperature differences. I plan to keep this activity as part of my usual in-person entomology unit for years to come.               – Shannon V.               May 30, 2021

Thank you for making my life easier! I was struggling to cut out pipe cleaner insects…this worked for remote and in-person students.              – Amy B.               August 4, 2021



Teach your students the Forensic Science of Death Investigation! This comprehensive bundle includes Interactive Google Slides, Guided Notes, Activities, Review and Assessment.
Bundle and Save! This resource is part of the Death Investigation Bundle!
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