Suggestions are provided for demonstrating vector cross product and vector dot product using manipulatives. Also provides a method for producing quick and inexpensive diffraction slits and ideas for demonstrating two-dimensional diffraction. (JM)

Active involvement in society-related issues can elevate junior high school students' interest not only in the problem being solved but also in related scientific concepts. Examples of how scientific concepts and society-related issues can be taught in the same class are presented, focusing on genetic engineering, water shortage, and others.…

Describes laboratory procedures, demonstrations, and classroom activities/materials, including use of dwarf cichlids (fishes) in secondary school biology, teaching edge effects on stomatal diffusion, computer program on effects of selection on gene frequencies, biological oxidation/reduction reactions, short cuts with Drosophila, computer program…

Teachers can capitalize on children's interest in recent science fiction movies by using books based on the films in their classrooms. Books taken from "E. T.,""Star Wars,""The Empire Strikes Back," and "The Wrath of Khan" are summarized, and learning activities to be used in conjunction with the books are suggested. (PP)

Describes a simulation in which students play roles of computer parts. Also describes cartesian divers and eye imagers prepared from empty detergent bottles and old 35-mm film cans respectively. Suggests using the divers and imagers as free give-aways during meetings or workshops. (JN)

Techniques for examining terrestrial and aquatic microorganisms using flattened glass capillaries are described. Capillaries can be left in natural or artificial environments for appropriate periods of time and removed for direct microscopic examination. Examples of organisms observed using the technique are given and suggestions made for wider…

Describes class projects involving astronomical photography. Includes a description of how to make an astrocamera or convert a pocket camera into one suitable for astrophotography, film choices, and phenomena to photograph, such as star trails, meteors, the sun, and the moon. (DS)

Outlines laboratory procedures, demonstrations, teaching suggestions, and content information related to chemistry. Topics include polarizing power; calorimetry and momentum; microcomputers in school chemistry; a constant-volume dispenser for liquids, floating magnets, and crystal lattices; preparation of chromium; and solvent polarity and…

Describes a 10-step model for analyzing lessons involving data processing, including a set of activities for early elementary and middle school grades. Each set provides examples of relevant questions, directions, and explanations. (Author/DC)

Proposes the use of schoolyard activities as a viable alternative to extended field trips for field investigations in biology. Describes and provides examples of different approaches including a problem oriented technique, Outdoor Biology Instructional Strategies (OBIS), and a sourcebook sponsored by the Council for Elementary Science…

Describes an interdisciplinary classroom activity to explain the effect of the ocean on local weather incorporating principles from physics, chemistry, mathematics, and meteorology. (DS)

Explores several options and advantages of using microcomputers in science teaching. Describes programs for calculating pH, Maxwell-Boltzman distribution of velocities in a gas, atomic orbitals, and lattice energies. Also suggests use of microcomputers in the areas of simulations, scoring tests, and controlling stock. (DS)

Provides directions for constructing a wooden or metal weather vane. Also describes the construction of a "Boomerang Drum," a machine which can store and release energy, and suggests activities for use with it. (DS)

Provides historical background for computer usage in education. Describes several aspects of technology emerging today which will have impact on education including: the emergence of the personal computer; communication technologies; and software engineering. Also describes several simulation packages for use in the science classroom. (DS)

Describes equipment, activities, and experiments useful in biology and environmental education instruction, including, among others, sampling in ecology using an overhead projector, the slide finder as an aid to microscopy, teaching kidney function, and teaching wildlife conservation-sand dune systems. (SK)