Presents a review of research focusing on scattering, elution techniques, electrozone sensing, filtration, centrifugation, comparison of techniques, data analysis, and particle size standards. The review covers the period 1986-1988. (MVL)

This review is divided into the following analytical methods: ion spectroscopy, electron spectroscopy, scanning tunneling microscopy, atomic force microscopy, optical spectroscopy, desorption techniques, and X-ray techniques. (MVL)

Discusses the problem of symmetry avoidance using water as an historical example. Uses simple pi systems for the analysis. Provides methodology and examples. Investigates two naive arguments. (MVL)

Presents a laboratory experiment which illustrates the formation of tris(phenanthroline)cobalt complexes in the 2+ and 3+ oxidation states, the effect of coordination on reactions of the ligand, and the use of a ligand displacement reaction in recovering the transformed ligand. Uses IR, UV-VIS, conductivity, and NMR. (MVL)

Presents a short reaction sequence that allows the student to determine by spectroscopic methods the constitution and stereochemistry of the reaction products. Reports the interpretations needed to illustrate the usefulness of the spectroscopic method. Notes the products of the Michael-Aldol reaction have not been reported in the literature. (MVL)

Responses from six engineering professors to a previous article about teaching engineering ethics are presented. Programs at several schools are described. The need to teach ethics to engineering students is reinforced. (CW)

Describes the pattern of curricular shift in science education and the development of science, technology, and society (STS) curricula including two university cases. Outlines further development of secondary schools and the implications involved in implementing them. (Author/YP)

Described are the basic materials and procedures used to study defensive burying behavior and suggested laboratory projects. Discusses live targets, non-living targets, social variables, and previous experiences of the subjects. (CW)

Describes three criteria for evaluating educational software; classification of software types, the presence or absence of process skills, and educational practices. This article provides background for a software evaluation form to appear in a subsequent issue. (CW)

Describes the state-of-the-art in computer interfacing in the biology laboratory. Discusses hardware and software. Enumerates the educational benefits from instrumentation such as cost effectiveness and increased student opportunity and motivation. Includes 14 references. (CW)

Examines reading comprehension as it applies to the chemistry lab and describes techniques that promote better comprehension of lab materials. Lists four levels of reading to understand: literal, inferential, evaluative, and creative. Notes three methods to teach reading: the reference approach, mapping, and request. (MVL)

Presents an easily performed experiment to determine sucrose concentrations using a laser and a hollow glass prism. The experiment is suggested for high school, freshman college, and instrumental analysis classes. Notes an Erlenmeyer flask can be used instead of a prism. (MVL)

Presents a procedure for an integrated first year chemistry laboratory class which provides an effective and colorful procedure to develop manipulative skills in synthesis and purification. Uses thin layer chromatography and NMR spectroscopy in the determination. Provides Rf values and representative NMR spectra. (MVL)

Develops an experiment that could be done in two- to three-hour blocks and does not rely on cold room procedures for most of the purification. Describes the materials, methods, and results of the purification of bovine heart lactate dehydrogenase using ammonium sulfate fractionation, dialysis, and separation using affinity chromatography and…

Discussed are the potential hazards associated with nitric acid, inorganic and organic nitrate salts, alkyl nitrates, acyl nitrates, aliphatic nitro compounds, aromatic nitro compounds, and nitration reactions. (CW)