Describes an interactive Fortran computer program which provides an exercise in the identification of bacteria. Provides a way of enhancing a student's approach to systematic bacteriology and numerical identification procedures. (Author/MA)

The University of Massachusetts has designed a preschool laboratory gym program for 2 1/2 - 5 year olds to encourage the development of a wide range of abilities, specifically, to provide practice in climbing, balancing, hanging, jumping, running, sliding, swinging, and ball handling. (JMF)

The classroom demonstration using ammonium dichromate to simulate a volcanic eruption can be modified into a more dramatic and accurate representation of the geologic processes involved in the formation of a volcanic crater. The materials, demonstration setup, safety procedures, and applications to instruction are presented. (Author/WB)

An innovative and cost-effective means of expanding curricular offerings for the rural school is the use of computer-assisted instruction, extension courses offered through correspondence, audiovisual courses, and videotape courses. (Author/MLF)

Describes solution spectrophotometry as a simple, rapid identification technique for organic paint pigments. Reports research which includes analytical schemes for the extraction and separation of organic pigments based on their solubilities, and the preparation of an extensive reference collection of spectral curves allowing their identification.…

Describes an advanced undergraduate physics experiment which permits the measurement of ultrasound velocity and absorption in liquid systems. A description of the tasks the student is expected to perform is also included. (HM)

Discusses a demonstration in which the near and far focusing distances of a student volunteer are measured and his or her glasses prescription is computed. (HM)

Describes a demonstration in which the local inertial frame of reference can be obtained in the laboratory by allowing a cage to fall freely without rotation under the influence of gravity. (HM)

Reports that a conference for professional chemists, educators in chemistry, and students was held to explore the issue of teaching chemistry to handicapped students. The ideas generated from the participants are intended to be used in preparing a manual of guidelines. (Author/SA)

Describes a laboratory scale reactor that determines the kinetics of a gas-solid catalytic reaction. The external recycle reactor construction is detailed with accompanying diagrams. Experimental details, application of the reactor to CO oxidation kinetics, interphase gradients, and intraphase gradients are discussed. (CS)

Includes annotations of articles from previous issues of this periodical on the following topics: balancing equations and nomenclature, the mole, the silver tree experiment, and history of the periodic table. (CS)

Describes a physical chemistry experiment involving the analysis of the spectrum of benzene vapor in which the resolution in terms of wave length is a limiting factor. (CS)

He-Ne laser experiments suitable for an undergraduate laboratory are described. The topics covered are cavity stability, self-mode-locking coherent interactions between pulses and laser medium, and spontaneous transverse mode locking. (Author/DS)

Instructions are given for care of the giant hissing cockroach, "Gromphadorhina portentosa" from Malagasy. Reproductive behavior is described, as well as development of the young roaches. (SA)

Describes the computer system and potentiometric titration as a simple experiment to illustrate several advantages and pitfalls in using the small computer in laboratory instruction. (Author/JN)