Describes improvement in students' use of language laboratory as a result of procedural innovations. (RS)

Describes an experiment which can be used to provide an introduction to study of reaction mechanisms and training in use of simple analytical and instrumental techniques. (PS)

Measuring activities using the metric system are suggested for the elementary level. (DT)

The ratio of electronic charge to Boltzmann's constant can be easily determined by measuring the short-circuit collector current versus the emitter-base voltage characteristic of a silicon transistor connected in the common-base mode. (Author/DF)

A device which provides an inexpensive means for making precise studies of the kinetics of gas molecules is discussed. Two experiments are described: (1) Measurement of the vibrational relaxation time of gas molecules and (2) determination of intermolecular forces in molecules. (Author/DF)