Education Technology

A Tale of Two Temperatures

Activity Overview

In this activity, students will collect data for a range of temperatures in units of Fahrenheit and Celsius, and develop a conversion formula for changing from one unit to the other.

Before the Activity

  • Install the CBL/CBR Application on the students' graphing calculators using TI Connect™ or TI-GRAPH LINK™, TI Connectivity cable and the unit-to-unit link cable
  • Connect the TI-73 to the CBL 2™ unit
  • Connect the two temperature probes to the CBL, one to Channel 1, and the second to Channel 2
  • Tape the two probes together so that the black tips are side by side
  • See the attached PDF file for detailed instructions for this activity
  • Print pages 15 - 33 from the attached PDF file for your class
  • During the Activity

    Distribute the pages to your class.

    Follow the Activity procedures:

  • Prepare two containers of water, one hot and the other cold
  • Place the probes in cold water
  • Using temperature probes, measure temperature in both units of Fahrenheit and Celsius
  • Quickly move the probes to the container with hot water and continue measuring temperature
  • Plot Fahrenheit versus Celsius data
  • Create a model for the relationship between the units of Fahrenheit and Celsius
  • Examine the slope and y-intercept of your model
  • Analyze the accuracy of the measures made by the probes with the CBL device as compared to the True conversion formula values
  • After the Activity

    Students will fill in the Student Data Collection and Analysis Sheet.

    Review student results:

  • As a class, discuss questions that appeared to be more challenging
  • Re-teach concepts as necessary