This report reviews some goals for laboratory activities in contemporary science teaching, discusses an investigation that analyzed and compared laboratory activities from two major physics guides, and discusses the implications of the goals and analysis for physics teaching. Six major deficiencies in the two laboratory handbooks are identified.…

Describes a funding simulation for use with college students in an advanced experimental psychology laboratory. Students write an original research paper and submit it to the professor--the "funding agency"--as a grant proposal. Projects are funded with grade points with which the student director purchases help from unfunded classmates. (RM)

Describes the features and operation of an inexpensive digital pH meter. Includes a schematic diagram of the pH meter and a parts list with cost and source of each part. (SK)

Describes procedures and semi-micro reaction apparatus (carbon dioxide trap) to demonstrate how a particular enzyme (L-Glutamic acid decarboxylase) may be used to determine the site or sites of labeling in its substrate (carbon-14 labeled glutamic acid). Includes calculations, solutions, and reagents used. (Author/SK)

An experimental technique to develop inferential thinking in less scientifically-oriented community college students is described. Students activate unlabeled gas discharge tubes and identify the gases by comparing color photographs with spectrometer observations. Includes methods for taking color photographs of spectra. (SK)

Discusses the need for ships enabling researchers to work in rough weather, thus expanding research capabilities; suggests a prototype semisubmerged ship which would meet research requirements. (DC)

Student activities and experimental procedures are described for an experiment using black and white photographic development to illustrate the determination of reaction rate, kinetic order of a reactant, and activation energy. (Author/SK)

Presents position statements indicating the necessity of laboratory experiences for the teaching and learning of science in the elementary school. Three different perspectives are addressed: research, curriculum, and teaching. (DS)

A list of demonstrations of discrepant events which have been found to stimulate the curiosity of students in science at the secondary school level are presented. A brief description of the materials and procedures for 15 of these demonstrations is outlined, with short explanations of concepts and principles involved. (MP)

Reported is a technique for chromosome staining that is simple, rapid, inexpensive, and requires little skill for success. (PB)

Describes experiments in which inexpensive or standard laboratory equipment is used to measure several macroscopic magnetic properties of thin rare earth garnet films used in the manufacture of magnetic bubble devices. (Author/CS)

Chemicals, asbestos, lead, and other substances used in classrooms, labs, art studios, and school lunchrooms pose risks to both students and teachers. Yet little is being done in a comprehensive manner to eliminate these risks. (Author/GC)

An attempt to attain various high level aims such as "training the mind,""developing judgment," and "achieving independence" within the framework of a first-year physics laboratory course is described. Evaluations of the course and the effectiveness of consequent improvements are discussed. (Author/MLW)

Reports a procedure for the formation of alkyldiazenido complexes of molybdenum in the absence of dioxygen, suitable for inclusion in an advanced inorganic chemistry laboratory. Includes background information and experimental procedures for two complexes. (SK)

Suggests that students study heats of neutralization of a 1 M solution of an unknown acid by 1 M solution of a strong base using the method continuous variation. Reviews results using several common acids. (SK)