Discusses and lists, in table form, the specifications and characteristics of 28 low-cost digital multimeters, including jacks, number of V ranges, max V, cost, approximate percent accuracy, current scales, display, battery life, volume, and manufacturers. Quality of construction, ease of repair, and similar characteristics not reported. (SK)

Describes the individualized audiovisual approach to teaching beginning accounting at a Wisconsin technical college. Discusses how it began as a remedial lab, its theories of individualized instruction, how the pilot project worked, and why this method is used. (CT)

Describes some impurity-related optical properties of semiconductors, with special emphasis on the luminescence of zinc sulfide (ZnS). Presents and interprets five experiments using a ZnS screen, ultraviolet lamp, transparent Dewar liquid nitrogen, and a helium/neon gas base. Includes application of luminescence measurements to archaeology. (SK)

Describes an experiment providing an experimental introduction to vibrational spectroscopy and experience in using an elementary vacuum line. The experiment, using a gas cell charged with methanol, is completed in a three-hour laboratory period and is directed toward understanding vibrational spectroscopy rather than the diagnostic value of the…

Presents background information, materials needed, and experimental procedures to study enzymes dependent on pyridine nucleotide coenzymes (NAD/NADH). The experiments, suitable for advanced organic or biochemistry courses, require approximately 10-15 hours to complete. (SK)

Describes an experiment to analyze commercial analgesic preparations (pain relievers) by silica gel thin layer chromatography, followed by preparative (thick) layer chromatographic separation and spectroscopic analysis. Key difference from similar experiments is that students are responsible for devising suitable solvent systems for the thin layer…

In anticipation of the celebration of Metric Week 1980, a collection of metric activities from a mathematics lab is presented in this article. The activities were selected as being most suitable to grades 2-6 and easily adaptable to classroom mathematics. (Author/MK)

A technique is presented which utilizes wax moth larvae in a laboratory investigation of an insect virus. Describes how an insect virus can be used to introduce undergraduate biology students to laboratory work on viruses and several virological concepts. (SA)

Describes a rapid staining technique for investigating the anatomical expression of two recessive genes. The demonstration is intended to stimulate students who are interested in the practical applications of genetics. (Author/SA)

Basic marine aquaria equipment, techniques for maintenance, specimens and food for the marine organisms are discussed. Several sources of specimens are included. (SA)

The future of the academic oceanographic fleet is discussed. The focus of the controversy surrounding the ships appears to be their size and fuel efficiency. Budget constraints and various ways in which to schedule ships for researchers are the primary concerns. (SA)

Describes a lysozyme assay for use in the biology classroom to teach enzymology. Provides background information, materials and methods, sources of lysozyme, and evaluation of the assay. (DS)

Materials and methods for studying the functioning and responses of stomatal guard cells are described. (PB)

Determined was the effect of autotutorial instruction in the laboratory portion of a general biology course designed for nonbiology majors. Results indicate positive effects in enrollment, increased retention, and improved student achievement. (CS)

These learning stations use questions about television and film stars, as well as famous historical figures, to motivate students in problem solving and other technical language skills. (Author/SJL)