It is shown that students have no difficulty scaling small diameter standard wall tubing if an explanatory sequence is incorporated into the experimental writeup. (DF)

A multidiscovery, open-ended, sciencing experience appears to have implemented nearly the full spectrum of cognitive, affective, and psychomotor objective domains.'' (Author/DF)

An investigation with inexpensive and common materials is designed to help teachers with the problem of involving a class in the process approach when materials and equipment are limited. (DF)

Short articles on the kinetics of the hydrogen peroxide-iodide ion reaction, simulation of fluidization catalysis, the use of Newman projection diagrams to represent steric relationships in organic chemistry, the use of synthetic substrates for proteolytic enzyme reactions, and two simple clock reactions"--hydrolysis of halogenoalkanes and…

Announces the National Science Teachers Association publications How to Investigate the Environment in the City: Air and Water'' and How to Tell What's Underground.'' (AL)