Describes the construction and operational procedures of a spark-timing apparatus which is designed to record the back and forth motion of one or two carts on linear air tracks. Applications to measurements of velocity, acceleration, simple harmonic motion, and collision problems are illustrated. (CC)

Describes interdisciplinary team teaching of an environmental studies course at Dickinson College which involves a physicist, a philosopher, an anthropologist, a theologian, and 15 community members. Physical scientist's roles and students' responses to the course are discussed. (CC)

Develops a simplified electrostatic model of the heart with conduction within the torso neglected to relate electrocardiogram patterns to the charge distribution within the myocardium. Suggests its application to explanation of Coulomb's law in general physics. (CC)

Criticizes the use of television, computers and Keller's plan in instruction to minimize lecturers' job in classroom. Concludes that the heart of the educational process is in teachers' expertise being communicated personally rather than mechanically even though the value of devices cannot be disregarded. (CC)

Summarizes the history of concepts concerning the molecular nature of polymers, involving the carbon chain theory, graphic formula, polycondensation, colloidal properties, polypeptide hypothesis, secondary aggregation, and Watson-Crick model. Indicates that macromolecular science should be accommodated within the discipline of molecular science…

Discusses the use of a modified air table to conduct laboratory experiments which eschews research-oriented lab experience and concentrates on concepts learned in classroom. Includes a description of apparatus construction, sample instruction sheets, and a list of laboratory concepts with their relationships to classroom materials. (CC)