Changes of buoyancy related to temperature of an aluminum block system in water are investigated. Three hypotheses to explain the observed change are developed and tested, and the intellectual processes used in the various steps are noted. (CP)

An analysis of the teacher's role, a listing of general propositions of learning theory, and a discussion of two different models of teaching behavior are presented. These are used as a basis for describing a teacher training program which would include clinical practice and constructive criticism. (TS)

Presents the procedures, results, and conclusions of a study designed to determine (1) the relations between physics teachers' knowledge of their subject and student learning on 17 cognitive, affective, and behavioral criteria, and (2) the interaction of teacher achievement with prior student achievement. Subjects were 36 teachers and their…

Describes a college physics course for the nonscientist offered at Pennsylvania State University, consisting of four components: (1) development of physics, (2) scientists as people, (3) science and society, and (4) personalizing physics teaching through informal meetings. Teachers and students discuss the social and moral issues surrounding the…

Describes laboratory experiments designed to demonstrate (1) the properties of cholesteric liquid crystals, (2) thermal mapping, (3) thermal diffusivity, (4) adiabatic expansion of rubber, and (5) measurement of radiated energy by a point source. Contains all of the information on materials and apparatus needed to perform the experiments.…