In this activity, students use CBL™ or CBL 2™ to measure voltages across increasing lengths of graphite and then use this data to build a mathematical model relating resistor length and voltage.
This is Activity 4 from the EXPLORATIONS book, TI-InterActive!™ Data Collection and Analysis (Texas Instruments Incorporated, 2000).
Before the Activity
Make copies of the activity worksheets as needed.
If you are using the LearningCheck™ quiz as an assessment, download it and have it ready to distribute to students. If you are using TI-Navigator System with the TI-73 you may need the attached .pdf file.
During the Activity
Have students complete the activity as directed in the PDF. Directions are given for both the CBL™ and CBL2™.
After the Activity
Have students complete the activity from the EXPLORATIONS book first. The attached LearningCheck™ appvar extends concepts from the activity above. This LearningCheck appvar can be sent to your class using TI-Navigator.
As a class, discuss questions that appeared to be more challenging
Re-teach concepts as necessary
Review student answers: