Activity Overview
In this activity, students' will use a Voltage sensor to measure the voltage produced by new dry cells of each size. They will also determine whether there is a relationship between dry cell size and voltage.
Before the Activity
- Connect the TI-73 to the CBL™ unit
- Connect the voltage sensor to Channel 1 in the CBL unit
- Download the DataMate App if needed
During the Activity
Distribute the pages to your class.
- Complete the Hypothesis section on the Data Collection and Analysis page and predict the effect of dry cell size on voltage
Follow the Activity procedures:
- Collect new dry cells of different sizes and put them into battery holders
- Attach the black and red leads to the positive and negative terminals on the battery holder will the help of alligator clips
- Measure the voltage across each cell type
- Record data for each dry cell type
- Create a bar graph to display the voltage reading for each dry cell size
- Understand the correlation between dry cell size and voltage
After the Activity
Students' will complete 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