Describes how social aspects of science can be incorporated into teaching soap and detergents in British secondary chemistry and general science courses. Historical background to the use and production of soap and the development of detergents are also presented. (HM)

A ten-step approach is presented by which two teachers can implement their own team teaching arrangement. Advantages, disadvantages, planning, scheduling, and room design are considered. (SJL)

Describes an experiment on light trapping in thin liquid films. Injection of a thin layer of solution at the boundary of a moving solvent is utilized to create a thin fluid sheet having an index of refraction greater than that of the surrounding medium. (Author/SA)

Describes a short undergraduate experiment which helps in explaining the concept of entropy and in illustrating the second law of thermodynamics. (GA)

The effects of a lecture-only biology course and a lecture-laboratory biology course on the attitudes and achievement of community college students were compared. (SA)

Describes an attempt to develop and staff a new first-year laboratory course at the University of Jordan. A postgraduate course in chemical education is used as the development and training vehicle. (BT)

Describes a self-paced high school chemistry program and its development over a 14 year period. Reviews the major evolution decisions resulting in the course as it is structured presently. (Author/SA)

Describes an experiment which uses a radioactive source, a Sodium Iodide detector, and a simple counting apparatus possessed by most universities and colleges. The decay scheme and the theory of nuclear beta decay are presented. (Author/SA)

Describes a constant-temperature observation chamber and includes instructions on constructing the apparatus. Suggestions for use are given as well as problems that might be encountered. (Author/SA)

Two small-scale studies of foreign language test validity are reviewed. The teacher variable is found to be the great threat to test validity, even when grammatical material is presented in the language laboratory. Suggestions for compensating for teacher influence are offered. (JB)

An applied science course with a variety of activities and independent studies for unmotivated high school students is described. (SA)

Describes a type of individual laboratory-activity examination developed for use in an undergraduate general physics class whose enrollment was more than 100 persons. Test preparation, procedure, evaluation, and outcomes are discussed. (BT)

Presents two demonstrations which are intended for chemistry college students. These demonstrations are: (1) enhancement of concentration quenching by micelles; and (2) the thermite lecture demonstration. (HM)

Describes the collection, care, and maintenance of protozoa by elementary school students. Techniques for collecting and observing them are given. (SA)

An inorganic chemistry course at the Free University of Amsterdam is part of an integrated program involving practical work and theoretical study for chemistry students. Twelve experiments are required and 11 are performed by students in groups of fours. (Author/SA)