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Beth A. Lindsey; Andrew Boudreaux; Drew J. Rosen; MacKenzie R. Stetzer; Mila Kryjevskaia – Physical Review Physics Education Research, 2024
In this study, we have explored the effectiveness of two instructional approaches in the context of the motion of objects falling at terminal speed in the presence of air resistance. We ground these instructional approaches in dual-process theories of reasoning, which assert that human cognition relies on two thinking processes. Dual-process…
Descriptors: Science Instruction, Teaching Methods, Instructional Effectiveness, Motion
Sanders, Justin M.; Boleman, Michael W. – Physics Teacher, 2013
At our university, students in introductory physics classes perform a laboratory exercise to measure the range of a projectile fired at an assigned angle. A set of photogates is used to determine the initial velocity of the projectile (the launch velocity). We noticed a systematic deviation between the experimentally measured range and the range…
Descriptors: Physics, College Science, Introductory Courses, Science Laboratories
Page, A.; Moreno, R.; Candelas, P.; Belmar, F. – European Journal of Physics, 2008
In this paper, we show the potential of webcams as precision measuring instruments in a physics laboratory. Various sources of error appearing in 2D coordinate measurements using low-cost commercial webcams are discussed, quantifying their impact on accuracy and precision, and simple procedures to control these sources of error are presented.…
Descriptors: Laboratory Equipment, Science Instruction, Science Laboratories, Physics