An exercise in chromatography that students can perform in class or at home using inexpensive, familiar materials is presented. (EB)

Discusses numerous aspects of science education, such as inquiry methods, research studies, the use of educational objectives, new curriculum projects, learning theories, and educational accountability. (MLH)

Discusses a laboratory experiment in which uranium is isolated by the reduction of uranyl acetate. (MLH)

Described are nutritional studies that can be incorporated into elementary biology courses. Included are suggested experiments concerning physical change, chemical change, and microbiological change. (SL)

Included are abstracts of 40 science projects for secondary level courses of biology, physical science, and chemistry. (SL)

Described is an experiment investigating carbon dioxide fixation in the dark and the diurnal rhythm of acid production in plants exhibiting Crassulacean Acid Metabolism. Included are suggestions for four further investigations. (SL)

Presented is a practical scheme to enable introductory biology students to investigate the mechanism by which urea is synthesized in the liver. The tissue-slice technique is discussed, and methods for the quantitative analysis of metabolites are presented. (Author/SL)

Suggested is the restructuring of secondary school biology curriculum utilizing an ecological approach based upon the physical existance of man as an individual, and as a species. Examples from a teaching syllabus are given. (SL)

Described are the background, operation, and findings of the work of the deep sea drilling vessel Glomar Challenger, which has taken 8,638 core samples from 573 holes at 392 sites on the floor of the Earth's oceans. (SL)

Reviewed are "adventure-type" environmental education activities incorporated into a secondary level biology course. Student wilderness experiences included 24 weekend activities of hiking, bird watching, camping, and cross-country skiing. (SL)

Discusses an experimental curriculum project in Hungary that introduces quantum mechanics into the secondary school. Briefly covers the following topics: superposition and intensity of waves, de Broglie wavelength, the uncertainty principle, ground states, quantum numbers, and symmetry. (MLH)

Describes 5 solar energy experiments that can be used in secondary school: flat-plate collector, solar thermoelectric generator, simple concentrators, solar cell, and natural storage of solar energy. (MLH)

Described is the Textbook Questioning Strategies Assessment Instrument and its utilization by teachers in the selection of a secondary level biology textbook. (SL)

Describes the process of self-regulation, which Piaget hypothesizes governs all intellectual growth, and suggests a way in which homework problems in a chemistry course can be used to provide students with an opportunity for self-regulation. (MLH)

Describes an experiment that used a four-element radio interferometer to illustrate gravitational deflection as predicted by the theory of general relativity. (MLH)