Reviewed research on the effect of the presence of other people on individuals' willingness to help in an emergency. Attention was paid to the nature of the precipitating incident; ambiguity of the helping situation; laboratory versus field settings; characteristics of subjects, victims, and bystanders; and communication among bystanders.…

Presents chemistry activities suitable for elementary students. Lists chemicals commonly used in elementary science, their common names, and where they may be obtained. (DS)

Describes a preschool science-based curriculum which encompasses four broad topics: water, small creatures, gadgetry, and environmental terraria. Includes a description and list of activities for each topic. Presents research suggesting that children participating in this curriculum increased their self-directed discovery and verbalized curiosity.…

Examines the pros and cons of laboratory instruction. Complaints lodged against laboratory instruction include its high cost, and lack of research supporting the lab. Justifications listed include science education research supporting the lab, psychology, and common sense. (DS)

Suggests individual student projects for extra-credit work to enhance student individuality. Provides a sample information sheet for independent projects (with suggested activities), a listing of project requirements, and a project evaluation checklist. (DS)

Several experiments are described using common laboratory apparatus and readily available materials to generate resonance spectra of air columns. The advantages of this apparatus and method of demonstration are visual impact and accuracy of results. (CS)

In order to illustrate his claim that children are able to plan their own work and develop the strategies which are most aporopriate to themselves, the author presents his class notes on a science experiment designed and conducted by one of his elementary students. (Author/SJL)

Describes the construction of an apparatus which can be used to demonstrate vapor pressures of solids, liquids, and solutions. (SK)

Guppies serve as a hardy, inexpensive, yet interesting species for classroom observation. Through a series of observations of individual males, groups of males, and males with females, students discover the signals male guppies use to set up social structure and to court females. (Author/DC)

Describes the relationship of Popper's theory of knowledge to chemistry instruction. Suggests that students be allowed to learn from their mistakes and presents five experiments with an implicit falsification purpose. (JN)

Summarizes viewpoints on the use of animals in science experiments in the biology classroom, including those of teachers, education researchers, biomedical scientists, science education administrators, and animal welfare advocates. (Author/CS)

Describes an inexpensive physics apparatus and experiment to dynamically determine Young's modulus for thin reeds and wire samples. (HM)

Outlines a variety of laboratory procedures, discussions, and demonstrations including in vitro contraction of muscle fibres and muscle proteins, sucrose density-gradient centrifugation, fern spore development, digestion of starch, construction of a small mammal trap, microscope selection, and occurrence and toxicity of mycotoxins. (GS)

Outlines a variety of laboratory procedures, discussions and demonstrations including the preparation and analysis of a square planar copper (11) complex, thermit reactions in a sand mould, product solubility, an aid for learning common oxyanions, thermal decomposition of nitric(v) acid. and nine others. (GS)

Outlines a variety of laboratory procedures, discussions, and demonstrations including a no-solder circuit board, damped to maintained oscillations with L-C circuits, polaroid strobe photos, resistive putty, soldering and circuit checking exercise, electromagnetic radiation, square pulses in C-R circuits, and testing an oscillating system. (GS)