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Heikkinen, Lasse; Savinainen, Antti; Saarelainen, Markku – Physics Teacher, 2016
The ray tracing method is widely used in teaching geometrical optics at the upper secondary and university levels. However, using simple and straightforward examples may lead to a situation in which students use the model of ray tracing too narrowly. Previous studies show that students seem to use the ray tracing method too concretely instead of…
Descriptors: Optics, Geometric Concepts, Secondary School Science, College Science
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Scott, Alan – Physics Teacher, 2014
On Aug. 13, 2011, at 8:45 p.m. country music fans were eagerly awaiting the band Sugarland to make its entry onto the main stage at the Indiana State Fairgrounds. Also competing for the fans' attention was an approaching storm. Sugarland never made their entrance. At 8:49 p.m. the stage rigging was hit by 59 mile/h (94 km/h) winds causing it to…
Descriptors: Introductory Courses, Fundamental Concepts, Physics, Investigations