Describes the development, objectives, content, and evaluation of a unique, 60-minute, synchronized slide/tape program on prehospital burn care for emergency medical technicians; and presents a design for valid content-reference formative evaluation. (Author/VT)

Presents a calorimetric experiment designed to clarify some of the basic physics of heat transfer and insulation. (GA)

Discusses the kinetic behavior associated with the interaction of metal ions with apocarbonic anhydrase, focusing on the formation of two metallocarbonic anhydrase--the biochemically active Co(II) and the inactive Ni(II)derivatives. (GA)

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

Discusses recent studies giving conflicting answers, mostly unfavorable, to the question of whether the language laboratory is effective. Also, it is argued that children learn their native language by a process very different from foreign language learning and that research on the stages of language learning is urgently needed. (WGA)

Discusses and responds to criticisms of ten indices proposed for monitoring the operations of a training development group as a means of detecting problems and evaluating the impact of management decisions: productivity, timeliness, effectiveness, project efficiency, curriculum efficiency, cost, value, developmental process, personnel development,…

Describes the college level experiments: a simple measurement of the isotopic abundance of 40-K, a mechanical experiment, on kinetic energy, and on soap films between wedged plates. (GA)

Describes three experiments to demonstrate several aspects of artificial radioactivity. Metal foils were activated, using slow neutron bombardment. (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 a laboratory game called SUPERCHARGE, used as an aid to help students understand the concept of equipotential surfaces generated by distributions of charges. (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)

Describes the following: an electric circuit for an expensive photometer, an amplifier circuit capable of demonstrating many aspects of behavior of free and driven oscillators, and finally a projection recording system which uses an unmodified XY or XT recorder and a separate overhead projector. (GA)

Experiments and demonstrations are presented which have been used in a high school course on animal behavior. Animals used include spiders, fish, birds, and mammals. (BB)

A method is described for preparing large gelatine-embedded soil sections for ecological studies. Sampling methods reduce structural disturbance of the samples to a minimum and include freezing the samples in the field to kill soil invertebrates in their natural microhabitats. Projects are suggested for upper secondary school students. (Author/BB)

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…