Five types of models are discussed as they relate to their function in the sciences and science teaching. These include scale, analogue, mathematical, theoretical, and archetypal models. (SA)

Described are different chemistry curricula that use lecture-experiments. Different components are discussed within the lecture-experiment format, such as determinism, memory, note taking, descriptive chemistry, and holistic chemistry. Also discussed are different personalities in chemistry education. (DS)

Described is a Piagetian learning cycle based on Monte Carlo modeling of several simple reaction mechanisms. Included are descriptions of learning cycle phases (exploration, invention, and discovery) and four BASIC-PLUS computer programs to be used in the explanation of chemical reacting systems. (Author/DS)

Described is a diffusion apparatus to be used in an undergraduate physical chemistry laboratory experiment to determine the diffusion coefficients of aqueous solutions of sucrose and potassium dichromate. Included is the principle of the method, apparatus design and description, and experimental procedure. (Author/DS)

Described is a science experiment involving the isolation and study of microorganisms. Bacteria from the mouth are cultured on blood agar culture plates and are then exposed to four different mouthwashes to test their effectiveness. (DS)

Describes a competency-based, modular laboratory course emphasizing the synthesis and characterization of polymers and directed toward senior undergraduate and/or first-year graduate students in science and engineering. One module, free-radical polymerization kinetics by dilatometry, is included as a sample. (CS)

Described is the National Sea Grant College Program which supports education and training, research, and advisory extension services through the National Office of Sea Grant and the Sea Grant Network of 30 programs in coastal and Great Lake states. Water-related topics include water's relationship to nature, society, and human expression.…

Presents examples of combination, decomposition, replacement metathesis, and neutralization chemical reactions. Suggests that students will gain knowledge of some general trends in the chemical properties of the main group and transition elements by examining reaction types. (JN)

Reports the results of a survey of practicing scientists, recent graduates, and undergraduates about their perceptions of undergraduate laboratory programs in biology, chemistry, and physics. Scientists and graduates regard laboratory experiences in pragmatic terms stressing the scientific process skills while undergraduates regard laboratories as…

The Australian Web of Life biology course is evaluated as to its philosophy and mode of instruction. The study reveals that the use of inquiry-oriented practices is relatively low and that teachers consider the objectives of the course more important than do their classes. (Author/DS)

Describes five environmental awareness activities which can be integrated into any elementary school classroom situation. Activity oriented experiences are described utilizing field experiences, group work, language experience, role playing and the inquiry method. Activity topics include the meaning of environment, introduction to natural and…

Investigates the opinions of 991 Israeli junior high school students with regard to their choices and preferences of science subjects. Findings show that preferred subjects were chosen both from school curricula and from having agents outside the school. (HM)

Shows that solar-related courses and programs are being offered by a large number of institutions around the country, and explains how to get relevant information about the subject. (GA)

Reviews of a study of curriculum and instruction in the sciences and social sciences in two-year colleges. Considers curriculum planning problems, the method of conducting the study, the percentage of colleges offering courses, and the availability of appropriate courses for transfer, occupational, and developmental students, and for nonscience…

Presents a model for teaching the principles of evolution. The model presents three major factors that direct changes and affect an individual's fitness. Uses and adaptations of the model are suggested. (Author/SA)