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Peer reviewedHobbs, E. D.; Hawkins, Bryson – Physics Teacher, 1978
Describes a science activity which allows secondary level students to discover the law of refraction. (SL)
Descriptors: Instruction, Optics, Physics, Science Activities
Peer reviewedHarter, William G. – American Journal of Physics, 1971
Presents the theoretical explanation of the observation that when a pen that is stuck in a hard rubber ball and dropped, the pen may bounce to several times the dropped height. Includes the procedure and models created to explain the observations. (DS)
Descriptors: College Science, Energy, Force, Instruction
Peer reviewedHorner, Jack K.; Rubba, Peter A. – Science Teacher, 1979
Using examples this article tries to dispel a common misconception that theories "mature" into laws by constant testing and confirmation. (GA)
Descriptors: Beliefs, Chemistry, Instruction, Physical Sciences
