Investigating Unprompted and Prompted Diagrams Generated by Physics MajorsDuring Problem Solving
Michael Vignal, Bethany R. Wilcox

TL;DR
This study examines how physics majors spontaneously and when prompted generate diagrams during problem solving, revealing differences based on context and experience that inform teaching strategies.
Contribution
It identifies distinct diagramming behaviors and features in physics problem solving, highlighting the influence of context and experience on diagram accuracy and usage.
Findings
Different physical contexts affect diagram accuracy importance
Within-cohort differences surpass between-cohort differences
Spontaneous and prompted diagrams differ in elements and features
Abstract
Diagrams are ubiquitous in physics, especially in physics education and physics problem solving. Problem solvers may generate diagrams to orient to a scenario, to organize information, to directly extract an answer, or as a tool of communication. In this study, we interviewed 19 undergraduate and graduate physics majors, asking them to solve 18 multiple-choice physics problems -- with no prompting regarding diagrams -- and then six diagramming tasks of situations similar to six of the multiple-choice problems. By comparing spontaneously generated and prompted diagrams, we identify different diagramming elements and features used by physics majors acting towards different ends (\textit{i.e.,} in different epistemic frames). We found that different physical contexts impact how critical it is to draw an accurate diagram, and that the differences in diagramming between cohorts…
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