Described in this teacher's guide are numerous experiments teachers may use to guide students in learning about community environmental problems. Experiments are relatively simple and useful in the junior high school grades. Activities allow the student to become acquainted with the methods for the detection and removal of undesirable materials…

A computerized library of references to integral neutron experiments has been developed at the Lawrence Radiation Laboratory at Livermore. This library serves as a data base for the systematic retrieval of documents describing diverse critical and bulk nuclear experiments. The evaluation and reduction of the physical parameters of the experiments…

This booklet has been prepared expressly for teachers and students who are interested in investigating the quality of water supplies. The intent is to provide technical support and background information concerning water quality factors and to give basic information on field and laboratory water testing techniques. It is assumed that the reader is…

Using examples this article tries to dispel a common misconception that theories "mature" into laws by constant testing and confirmation. (GA)

This inexpensive, effective chemiluminescence demonstration requires minimal preparation. It is based on the oxidation of oxalyl chloride by hydrogen peroxide in the presence of an appropriate fluorescent sensitizer. The reaction mechanism is not completely understood. (BB)

Two statistical tools, the Chi-square and standard error approaches, are compared for use in Mendelian genetics experiments. Although the Chi-square technique is more often used, the standard error approach is to be preferred for both research investigations and student experiments. (BB)

Describes how involving the students' bodies in the study of certain scientific principles, such as center of gravity, pendulums, and volume by water displacement have resulted in building up their interest and increased their motivation toward learning science. (GA)

Describes the use of a small digital computer to simulate a peripheral nerve demonstration in which the action potential responses to pairs of stimuli are used to illustrate the properties of excitable membranes. (Author/MA)

This symposium focused on the question: can colleges afford to continue offering high quality laboratory instruction at the undergraduate level. (Author/BB)

Describes a simple inexpensive experiment designed to measure the levels of cortisol in a serum or plasma sample. (Author/GA)

Describes a simple method for measuring the heat of vaporization of water, which gives results within five percent of the accepted value. (GA)

Describes an experiment in nuclear physics to study radioisotopes. In this experiment the build-up of the activity of the source, 28-A1, is done first by irradiating it. (GA)

Discusses two different uses of information theory in chemistry to present entropy and chemical structure analysis. (GA)

An experimental system, suitable for secondary schools, uses Chlorella vulgaris to demonstrate the effects of mercury and cadmium. Very low concentrations of mercury or cadmium decrease growth, whereas lead or arsenic have little effect. Further experiments show additive interactions between mercury and cadmium and antagonistic interactions…

Urges the use of the immediate environment of the school to serve as a focus and a medium to help plan activities and experiments in the different subject areas of science, and in the area of environment. (GA)