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PERC 2012 Abstract Detail Page

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Abstract Title: The Dependence of Instructional Outcomes on Students' Individual Differences: An Example from Simple DC Circuits
Abstract: In a study of student understanding of the power dissipated through simple networks of resistors, two consistent, contradictory response patterns were identified: a greater equivalent resistance always dissipates more power, and a lesser equivalent resistance always dissipates more power.  After completing one of two sequences of practice-questions, the performance of students who had initially thought that less resistance meant more power improved, while the performance of the opposing group did not -- despite one of the practice sequences specifically addressing the idea that more resistance means more power.  Because one prior conception appears to be susceptible to practice while the other does not, specific attention must be given to interactions between differing ideas and the physical concept being taught.  If an instructor only examines the performance of the entire class, an overall increase in performance might mask a misalignment between instruction and the understanding of a significant number of students.
Abstract Type: Contributed Poster Presentation

Author/Organizer Information

Primary Contact: Thomas M. Scaife
University of Wisconsin - Platteville
1 University Plaza
Engineering Hall, Room 221
Platteville, WI 53818
Phone: 6083426059
Co-Author(s)
and Co-Presenter(s)
Andrew F. Heckler, The Ohio State University

Contributed Poster

Contributed Poster: Download the Contributed Poster