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Forensics with TI-Nspire™- Case File: Hot Air, Cold Body

Activity Overview

In this activity, students will use Newton’s Law of Cooling to determine the time of death at a crime scene.

Objectives

  • Determine the time of death of a person who has died within the last few hours.
  • Create a temperature vs. time graph for cooling.
  • Model the temperature data with an exponential function.
  • Use the model to estimate time of death.

About the Lesson

  • In this data-gathering activity, students will determine the time of death of a person who has died within the last few hours.
  • Students will collect data using the Vernier EasyTemp® .
  • The student activity sheet and .tns file contain the complete instructions for data collection. All assessment questions are also included in both places giving you the flexibility to either collect the .tns files with student data/answers (using TI-Nspire Navigator) or the student activity sheet.

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