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