Forensic Science CER Crime Scene Activity Contaminated Lemonade Mystery Powder

Description

“Are you looking for an engaging crime scene worksheet activity to easily introduce your middle school students to claim evidence reasoning (CER) and scientific explanations? Students will love this forensic science solve-the-case CSI investigation where they analyze the evidence and write up their findings using the claim evidence reasoning CER format to solve the case of the contaminated lemonade. Using chemistry: pH, reactions with vinegar, and solubility, students identify a mystery white powder and figure out who tampered with the festival lemonade.

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What will students be doing during this forensic science claim evidence reasoning CER practice activity?

• They will observe the crime scene
• Analyze the incident report and forensic reports
• Test and identify an unknown white powder using pH, reaction with vinegar, and solubility
• Record their observations and notes in an investigation journal
• Use their knowledge to explain what happened using the CER format

What teachers like you are saying about our forensic science claim evidence reasoning CER practice activities:

⭐⭐⭐⭐⭐ “This was a fantastic way of reviewing CER with my students! They were engaged from the get-go! This year, my students are all about crimes and solving mysteries. This resource allowed them to get into the crime and use their CER skills to determine who might have committed the crime. I kept it open-ended, if they had solid evidence to prove someone’s guilt, then they got the points. I was amazed at how creative they got with the evidence, and how invested they were in solving the crime! Thank you so much for creating this resource, it was amazing!”

⭐⭐⭐⭐⭐ “My students loved this activity so much! They were so into solving the ‘crime’ that they didn’t even realize the work they were putting in! An excellent way for them to practice CER in little steps and then allow them to put it all together!”

⭐⭐⭐⭐⭐ “This activity was a great way to work on CER without being too ‘science-y.’ I teach 9th grade instructional biology and this was just the right amount of science and writing. My students lose interest very quickly and solving the mystery kept them guessing. After every piece of evidence, they were trying to figure out what happened. Great resource!”

What is included in this forensic science claim evidence reasoning CER practice activity:

✅ Picture of the crime scene

✅ Incident Report

✅ List of suspects (suspect profiles)

✅ Forensic Reports: fingerprint analysis & chemical analysis of unknown powders (pH, vinegar reaction, solubility)

✅ CER graphic organizers

✅ Language support sentence starters

✅ Writing templates

✅ Student journal (print and digital format)

✅ Grading rubric

✅ Student self-check checklist

✅ Answer key

Some other Products you might like

➡ Most popular Claim, Evidence, Reasoning Writing Template

➡ Physical Science Guided Reading Growing Bundle

➡ scientific method mega bundle with penny lab

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