Included is information regarding: student construction of Newton's Discs to demonstrate color and of paper helicopters to encourage inquiry; improvising an apparatus demonstrating pressure between two bubbles; animal behavior experiments involving woodlice; two experiments using electronics freezer spray; chromatography of dyes; leaf keys; an…

Presents Part II of a description of a computer-oriented course on process control which has been offered at the University of Wisconsin for undergraduate students. Lecture topics and laboratory experiments are also included. (HM)

Describes briefly three experiments, which are presented by three physics teachers to share their ideas with other teachers and readers. These experiments are: (1) a simple hazemeter for window pollution assessment; (2) the speed of light; and (3) the ball-bearing electric motor. (HM)

This experiment is designed to acquaint the student with a macromolecular synthesis of a crown ether type compound. The starting materials are readily available and the product, a cyclic polyether, belongs to a class of compounds that has aroused the interest of chemist and biologist alike. (Author/BB)

This undergraduate experiment shows that the inclusion of an appropriate additive can have a very marked effect on the physical properties of a polymer. The polymer used is polypropylene and the additives are 2-hydroxy-4-octyloxy-benzophenone and benzophenone. (BB)

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)