Describes a method for measuring osmotic potential which is suitable for high school and college biology classes. This method introduces students to the hard-to-visualize technique of using density gradients to separate cells or cell constituents of differing densities. (JR)

Reports the results of a study relating to the effectiveness of the 1972 National Science Foundation summer institute at Ball State University. Participating teachers were motivated to increase, in their own teaching, the level of emphasis given to 45 of 55 instructional topics stressed in the institute. (JR)

Discussed and questioned is the credibility of the widely-held view concerning the role of impartiality and crucial experiments in science as exemplified by the 18th century controversy between Spallanzani and Needham. Science teachers are cautioned to remember that performing investigations and conducting experiments are tasks not entirely devoid…

Three elementary school science curriculum projects, Elementary Science Study (ESS), Science - A Process Approach (S-APA), and Science Curriculum Improvement Study (SCIS), are compared concerning the biologic content each project contains. The reviewer found a lack of activities designed to represent functions at the cellular level. Two projects…

Described is the Inquiry Role Approach, a teaching methodology for secondary school biology, developed by staff at the Mid-continent Regional Educational Laboratory in Kansas City, Missouri. The materials are designed to complement, not to supplement or substitute for, the biology textbook. (PEB)

The first part of a two-part article deals with U.S. science as viewed from Indochina in contrast to the nature of science as seen by American scientists. (JR)

Describes the use of slides and artifacts from East Africa as a means of stimulating student interest and discussion in environmental and ecological problems. (JR)

Discusses the importance of children developing personal associations with animals, and suggests that it is the responsibility of schools to teach students how to properly care for pets. With particular reference to Canadian experiences, criticizes the widespread neglect of pets and misuse of animals in school laboratories and science fairs. (JR)

Argues that the topic of symbiosis has been greatly neglected and underemphasized in general-biology textbooks. Discusses many types and examples of symbiosis, and provides an extensive bibliography of the literature related to this topic. (JR)

The second part of a two-part article contains an attempt to synthesize the viewpoints of United States science as seen (1) from Indochina (2) by American scientists and (3) from the vantage point of history. (JR)