Describes a technique in which a Fabry-Perot etalon can be used to demonstrate longitudinal and transverse modes present in a laser beam. (Author/CP)

One snake-phobic woman and one spider-phobic woman, after having received systematic desensitization, were exposed to a live snake or spider in a caged or an uncaged condition. The implications of these findings for the external validity of the behavioral approach test are discussed. (EJT)

Presents a model combining videotape and other media for integration into social work curriculum design as part of the on-campus laboratory, a skill training and practice center, which assists with the interface of classroom and field education. (JT)

Describes how to modify an electroscope so the charge can not leak out. (LS)

Describes five ways for harnessing solar energy and lists references containing suggestions for classroom experimentation. (LS)

Experiments using soap films illustrate some of the most basic theorems concerning networks in a geometric framework. (SD)

Describes an undergraduate analytical chemistry course that utilizes instrument modules, which show how the key parts of an instrument fit together and contribute to the overall operation of the instrument. (MLH)

Describes thin-layer chromatography experiments in which the students separate natural products, such as paprika, chile powder, and peppers. (MLH)

Describes an undergraduate chemistry experiment in which an atomic absorption spectrophotometer is used for recording flame emission spectra of the diatomic carbon molecule. (MLH)

A game, similar to bingo is described, in which students match names, symbols, and figures. (SD)

Describes the apparatus and applications of a solar energy study kit suitable for school and college use. (LS)