Discusses the use of a computer program to describe chemical reactions by the concepts of reaction coordinate and energy profile. Indicates that representation of a collision encounter by a trajectory on the energy surface leads to a precise explanation, rather than schematic, in the teaching chemical kinetics. (CC)

Discusses the character of active'' and centerless'' individuals on the basis of psychoanalysts' findings. Indicates that the teacher has the role of helping students realize their powers and potentialities and thus avoid the enervation caused by their centerless tendency. (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…

Studied the relationship of teachers' I/D ratio to their students' achievement and retention of learning in senior high chemistry and junior high general science classes. Concluded that the student score on a standardized achievement test was dependent on the teacher I/D ratio as measured on Flanders scale. (CC)