Proposes that identification keys provide an orderly strategy for the identification of igneous and metamorphic rocks in an introductory geology course. Explains the format employed in the system and includes the actual key guides for both igneous and metamorphic rocks. (ML)

Describes a science activity designed for undergraduate biochemistry classes. Provides background, a list of materials, experimental procedures, and the results of this experiment. (CW)

Presents a practical exercise that enables students to measure flux control coefficients in a metabolic pathway in vitro, to verify the summation property, and to compare the differences in the distribution of these coefficients in different steady states. Discusses background, materials, methods, and results of the activity. (CW)

Discussed are causes of fires that occur in school science laboratories and ways of preventing them. (RH)

The third in a series of the Journal of Educational Techniques and Technologies surveys showcasing state-of-the-art learning laboratory systems. Distributor and end users of this system answer questions about its features and use. Distributor responses are in interview form; end users' responses are in tabular form. (Author/LMO)

Describes the construction of an inexpensive apparatus for separating proteins by polyacrylamide gel electrolysis in the presence of sodium dodecyl sulphate. (TW)

Suggests a new experiment to study the genetic material of eukaryotes. It is based on the rapid growth and interest of the research on chromatin. (TW)

Describes an introductory activity called educational oral history which was designed to improve communications between teachers and disadvantaged students in an integrated basic course in reading and writing. Concludes the project also raised students' pride and ability to comprehend and participate in the course. (SD)

Assessment of the effectiveness of workstations teaching English-as-a-second-language content, vocabulary, and idiomatic expressions through an adventure film found that the workstations were highly motivational and stimulating, while their effectiveness depended on the students' individual learning styles. (Author/CB)

A discussion of the relationship of politics and the welfare of research animals looks at the nineteenth-century history of the issue, current activism in Europe, recent legislative and political action in the United States, and the position of the biomedical community, and provides guidelines for political action. (MSE)

Describes experiments used during recent history to explain the nature of the quantum world. Explains the essential elements of experiments using polarized light and magnetic flux. Illustrates differences between classical theories in physics and quantum theory. Shows how experiments in the microscopic and macroscopic world appear to support…

Describes an experiment to identify lactose and estimate the concentration of lactose in a sample of milk. Gives a background of the investigation. Details the experimental method, results and calculations. Discusses the implications of the experiment to students. Suggests further experiments using the same technique used in…

Examines some of the difficulties in peer tutoring and points out the dilemma of whether to emphasize the tutor component (apprentice model) or the peer component (colearner model). Offers a solution that incorporates elements from both stages, one that treats tutors developmentally. (NKA)

Describes how a traditional neurophysiology laboratory has been computerized and how students work with digitizing on-line data. Points out advantages of computerization, including the speed, accuracy, and reliability in the acquisition, reduction, and analysis of data. Also describes four generic computer programs tailored to the particular…

Consists of interviews with three technology education practitioners. The topic is the needs for technology education facilities now and in the future. (CH)