The prototype contains fuses, a potentiometer, a switch, a battery, and lights for the students to analyze. They have been assembled in a circuit to illuminate two lights, and adjust the brightness with a potentiometer.

Technical Description

Future Improvements !  The students suggested that the

potentiometer and fuse portion of the video should have been separated better, and that each segment should have been slower to learn the information easier.

!  Addition of more complex components for the students to examine, and a third board with a circuit with more components to increase the difficulty.

!  Two separate boards were developed to teach proper usage, then implement the knowledge required to successfully operate a multimeter.

!  The teaching board, shown in Figure 1, consisted of separated components so the students could learn how to measure each part and the expected readings of the multimeter.

!  The testing board, shown in Figure 2, is a fully functioning circuit that has faults for the students to test their knowledge.

Implemented Solution

Develop a method for teaching the proper operation of a multimeter and its’ applicable uses to hearing impaired through considering all aspects of assistive technology.

Problem Statement

Timothy Hinds !  Michigan State University EGR 100 Professor Stephen Blosser !  Resource Center for Persons with Disabilities Representative Eric McElmurry !  Michigan State University EGR 100 Teaching Assistant

Acknowledgements

Costs

All About Circuits (information) DIY Audio (Information) RadioShack (Pricing) Michigan State’s Angel (Project Description)

References

Design of Teaching Board Design of Testing Board

Initial Prototype Design

!  In order to test the effectiveness of the teaching strategy, the team showed the video to a group of high school students and had them attempt to determine the faults in the circuit.

!  The students were able to test all components except the potentiometer after the first presentation. The confusion was corrected after the second viewing and the students repaired the circuit.

Results

Final Prototype Design

Figure 1 Figure 2