Education Technology

Activities

• Subject Area

• Science: Physical Science: Energy
• Science: Chemistry: Energy and Matter

6-8

60 Minutes

• Device
• TI-73 Explorer™

TI Connect™

• Accessories

CBL™/CBL 2™
Sensor - Temperature
TI Connectivity Cable

• Other Materials
This is Activity 2 from the EXPLORATIONS Book:
Data Collection Activities for the Middle Grades with the TI-73, CBL™, and CBR™

The following materials are required for this activity:
• FANDC.73p program
• A cool and a warm liquid
• Tape to hold the two probes together

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.

• 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