Summarizes the thermodynamics of macromolecular systems, including theories and experiments of cyclic energy conversion with rubber and collagen as working substances. Indicates that an early introduction into the concept of chemical potential and solution thermodynamics is made possible through the study of the cyclic processes. (CC)

Describes two experiments in physiology using a readily available marine vertebrate, the flounder. Representative results are presented from experiments which measure the effect of excess potassium on the flounder EKG, and the effect of temperature on heart rate of the starry flounder. (JR)

Describes simple quantitative determinations for ethanol and carbon dioxide, together with techniques for examining the effects of a number of environmental factors on their production. The experimental work centers around the growth of a cell population of yeast, and is suitable for senior high school students. (JR)

Describes two experiments using carbon dioxide cartridges to demonstrate Newton's third law of motion. (JR)

Describes the programs developed for elementary school children at twelve of the nation's leading science museums. These programs are based on physical and life sciences, make use of visitor-participation exhibits, and demonstrate scientific principles and their applications in society and industry. (JR)

Discusses the use of museums as a teaching resource and the importance of previsit planning, the way in which the tour is conducted, and the follow-up activities. Describes several techniques using an inquiry approach designed to make the museum visit more exciting and of greater educational value. (JR)

Describes an outdoor educational program at the University of California Botanical Garden in which children are encouraged to handle the plants and are provided with a taped commentary. By the use of an inquiry method, children learn how the Californian Indians used many of the native plants. (JR)

Discusses an open-ended experiment which is instigated by students to study noise levels on the Kent State University campus. Indicates that the activities make it possible for the students to acquire socially relevant and potentially useful information under more realistic environments. (CC)

Discusses the use of a balance assembled from standard laboratory components to conduct an experiment on the repulsion between two bar magnets. Includes an analysis of data on the two-pole and four-pole models. (CC)

Describes some laboratory experiments that can strengthen the study of non-aqueous ionizing solvents in Nuffield A-level chemistry course. (PS)

Includes thirteen topics relating to laboratory activities, organisms, and teaching materials for secondary school biology classes. Also provides a reading list of articles published during 1972 that are suitable for A and S level biology. (JR)