By measuring certain transport and degradation properties of chemicals one can establish priorities for the routes and likely points of residence of these materials in the environment. Outlined are transport and degradation tests. (Author/MA)

Described are methods for making Cartesian divers for explaining atomic models utilizing a city planning analogy, a game for reviewing subject matter, the construction of a cell model, an improved diffusion demonstration, and uses of inexpensive glass cutters. (SL)

Describes a research project examining non-professional knowledge of and attitudes to sensitivity training groups. A questionnaire was distributed to college students, police officers and members of a group dynamics class. Results indicate that all three groups had fairly positive attitudes towards sensitivity training. (NG)

A laboratory experiment is described which illustrates such concepts as resonance, inductive, steric, and solvation effects in a beginning organic chemistry course. This experiment is designed to encourage students to predict results and interpret their findings. (MR)

In this section, brief contributed articles on a variety of secondary school science topics appear. (CP)

Describes a demonstration experiment illustrating rotation of grains process of metamorphic rock formation utilizing clear gelatin blocks. (SL)

Describes an apparatus for demonstrating the transmission line propagation and radiation of electromagnetic waves in the 160-170 MHZ v.h.f. region. (SL)

Describes a low cost potentiostat/coulometer which can maintain an eletroylsis current of up to 100 MA at cell voltages as high as 100V. (Author/SL)

Describes an experiment in which students determine the level of cholesterol in serum. (SL)

Reviews recent developments in chromatographic instrumentation. (SL)

Suggests use of the planarian D. Dorotocephala, an animal 20 mm in size, in order to provide inexpensive lab experiences for students in large introductory psychology courses. The animal can be used to study perception, memory, behavior modification, and group processes. (Author/AV)

Describes experiments involving the synthesis of compounds which exhibit pronounced color changes with changes of solvent polarity. (SL)

Describes an undergraduate analytical laboratory experiment demonstrating the use of masking to obtain selectivity in complexometry. (SL)

National Fire Protection Week is a perfect time for launching a fire safety learning center. The activities described here are intended to help children recognize fire hazards in their homes, play areas and public buildings; learn how to act intelligently in fire emergencies; be able to share their knowledge of fire safety with others and…

A detailed description of language laboratory sessions in first- and second-year advanced college French classes. Each session is fifty minutes long and includes a wide variety of carefully planned and integrated exercises. Students and instructors are happy with the program. (AMH)