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Abstract Title: A detail analysis of isomorphic problems: The case of vector problems
Abstract: The methodology of using two isomorphic problems focuses on detecting differences in students' performance when doing one of the problems. In this article we present a methodology that not only focuses on this, but also analyzes the way that students' answers change when doing both problems and the effect in students' performance of doing previously the associated problem. We administered isomorphic tests with vector problems to 330 students finishing a mechanics course. We used two set of problems: negative scalar multiplication (no-context and velocity context) and dot product interpretation (no-context and work context). In the first set we detected a significant effect on the no-context problem when students previously did the velocity context problem. In the second set we found that a great proportion of students answered correctly the work context problem but incorrectly the no-context problem. This article presents the methodology so it can be used by other researchers.
Abstract Type: Contributed Poster Presentation

Author/Organizer Information

Primary Contact: Genaro Zavala
Tecnologico de Monterrey
E. Garza Sada 2501
Monterrey, Non U.S. 64849
Phone: +52 8183582000 ext. 4631
Co-Author(s)
and Co-Presenter(s)
Pablo Barniol
Tecnologico de Monterrey