A direct aqueous injection (DAI) technique was compared with the purge method for chloroform measurement in drinking water. The DAI method gave consistently higher values for chloroform than the purge method. The results indicated the need for caution in the interpretation of chloroform and other trihalomethane values generated by DAI. (Author/MA)

Describes the development of the ion scattering spectrometry (ISS) analytical instruments. (SL)

A laboratory teaching experience (L.T.E.) was designed to focus on three teaching behaviors. It was recognized that a behavioral approach to teaching simplified its complexity by isolating specific teaching behaviors. Discusses the development and evaluation of the laboratory teaching experience. (Author/RK)

Use of graphs in studying greatest common divisors, least common multiples, and other concepts can illustrate patterns related to the definitions of these concepts. (SD)

Research is reviewed which demonstrates the existence of reverse discrimination (majority group members treating other majority group members worse than they treat members of a minority group) and tokenism (a decrease in subsequent compliance to large interracial requests) following prior compliance to smaller requests. Within subject evidence…

This research is based on the premise that sensitivity training effects are explicable in terms of processes of social influence. Subjects were participants in a residential 5-day training laboratory. Results indicated that no single strong source of influence could be discerned. Implications are discussed. (NG)

The types of notes provided for postgraduate demonstrators to help them teach effectively in the laboratory are described. Notes have been written at the University of London for four laboratories, in some cases permitting permanent academic staff to be replaced almost entirely by the demonstrators. (LBH)

An experimental procedure is described for studying oxygen uptake by a transition metal. This procedure is designed for use with undergraduates and may be used in organic or biochemistry laboratories. Diagrams of the apparatus are included. (MR)

Two experiments are described and appropriate discussion is given to illustrate the use of substoichiometry and saturation analysis techniques with undergraduates. The first experiment is the determination of silver content in photographic film. The second is the estimation of a hormone concentration using saturation analysis and a commercially…

Students enrolled in a reading and study skills center for nine hours or more were no more successful academically than students who completed fewer hours. (MKM)

Describes a chemical experiment which illustrates the Beckman rearrangement and ring opening reactions. (SL)

Describes increased sophistication in instrument spectrophotometry. (SL)

Reviews developments in the field of thermal analysis instrumentation. (SL)

Discusses the biocidal/toxicological applications of organo derivatives of true metals. (SL)

Describes laboratory experiments illustrating the multiple metal-metal bond systems suitable for undergraduate level lecture courses. (SL)