July 26-27,
2006 |
8:00-10:00 PM,
Wednesday, July 26
Room to be Announced
Contributed Poster
Presenters:
Please
follow the instructions provided here.
[CP-70]
Analysis of
Shifts in Students’ Reasoning Regarding Electric Field and Potential
Concepts
Meltzer, David E.mailto:
(dmeltzer@u.washington.edu) Department of Physics, University of
Washington
Abstract: Students’ reasoning
regarding the relationships among electric fields, forces, and equipotential
line patterns was explored using pre- and post-test responses to selected
multiple-choice questions on the Conceptual Survey of Electricity and Magnetism.
Students’ written explanations of their reasoning, provided both pre- and
post-instruction, allowed additional assessment of the changes in their
thinking. In particular, the data indicate that although students largely
abandon an initial tendency to associate stronger fields with wider
equipotential line spacing, many of them persist in incorrectly associating
electric field magnitude at a point with the electric potential at that
point.
Supported in part by NSF REC-#0206683 (T. J. Greenbowe, Co-P.I.),
DUE-#0243258, and DUE-#0311450