Sarah Chang

(Swarthmore College)

Research Project Description.

Geometric optics is a confusing subject for many physics students, who often first encounter the subject in introductory college physics classes. Traditional instruction in geometric optics is not as effective as using interactive simulations. PhET Interactive Simulations created a geometric optics Flash simulation in 2004, but modern browsers have eliminated support for Flash as of January 2021. We redesigned and redeveloped the simulation in Javascript/HTML5, keeping the basic design but also adding new features to expand on the learning goals and address common student diffculties. We assessed the effectiveness of the redesign through think-aloud student interviews.


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