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Peer reviewedHelfgott, Michel; Simonsen, Linda M. – Mathematics and Computer Education, 1998
Presents an activity to investigate physico-mathematical concepts and provide mathematics arguments that are very close to a proof with the advent and availability of powerful technology. Demonstrates without using calculus how the law of reflection for parabolas is derived from Fermat's principle of least time. (ASK)
Descriptors: Educational Technology, Geometry, Graphing Calculators, Higher Education
