Describes a demonstration with mothballs that simulates the ballast mechanism of a fish air bladder. (BR)

Describes the use of storage oscilloscopes in five physics experiments, in lecture demonstrations, and in improved measurement techniques. (GS)

One way to motivate students' interest in physics is to teach it in the context of medicine. Optics, for example, can be taught with examples from the eye. For many years simple optics of lenses has been taught using a model of the eye. However, recent advances in using lasers for ophthalmological (ocular) examinations can be used to increase…

Traditionally, the Doppler effect for sound is introduced in high school and college physics courses. Students calculate the perceived frequency for several scenarios relating a stationary or moving observer and a stationary or moving sound source. These calculations assume a constant velocity of the observer and/or source. Although seldom…

Presenting research and experimentation (R & E) as an industrial arts content area enables the student to develop both the manual and mental skills necessary to survive societal changes. Problems in its presentation are considered and the role of R & E in industry is described. (AG)

This teaching module was developed by the project "Recent Developments in Science and Technology with Applications for Secondary Science Teaching." Premises about students and their learning and generalizations about content are described. Chapters included are: (1) "Introduction"; (2) "Monomers into Polymers"; (3) "Natural Polymers"; (4)…

The different approaches to the generation of power from solar energy may be roughly divided into five categories: distributed collectors; central receivers; biomass; ocean thermal energy conversion; and photovoltaic devices. The first approach (distributed collectors) is the subject of this module. The material presented is designed to…

Nine authors contributed to a three part bulletin inviting research in social education. Part 1, Research Perspectives, contains chapters one and two: (1) "The Invitation" (Catherine Cornbleth) and (2)"Paradigm and Purpose" (Thomas S. Popkewitz). Part 2, "Research Alternatives, has chapters three through eight: (3) "Survey Research" (Dennie L.…

The purposes of water treatment in a marine steam power plant are to prevent damage to boilers, steam-operated equipment, and steam and condensate lives, and to keep all equipment operating at the highest level of efficiency. This laboratory exercise is designed to provide students with experiences in making accurate boiler water tests and to…