Materials and methods for studying the functioning and responses of stomatal guard cells are described. (PB)

Determined was the effect of autotutorial instruction in the laboratory portion of a general biology course designed for nonbiology majors. Results indicate positive effects in enrollment, increased retention, and improved student achievement. (CS)

These learning stations use questions about television and film stars, as well as famous historical figures, to motivate students in problem solving and other technical language skills. (Author/SJL)

The ideal learning center is, in essence, a living definition of competency-based education. Such a center has the capability of meeting the diverse needs of adult school students while at the same time raising the coping skills or competencies of its participants on an individualized basis. (Author)

Describes kinetics experiments completed in a single two-hour laboratory period at 25 degrees Centigrade of nitrito to nitro rearrangement, based on the recently discovered base-catalysis path. Includes information on synthesis and characterization of linkage isomers, spectrophotometric techniques, and experimental procedures. (SK)

Decline in research emphasis in universities is tied to a number of factors: defensive apathy in the university scientific community; weakening links between teaching and research; declining enrollments; problems in interdisciplinary work; employment stability and aging faculty, obsolete equipment, support staff reduction, and growing bureaucracy.…

Presents a simple, economical model of circulatory behavior that illustrates the effect of changes in cardiac output, peripheral resistance and compliance on arterial blood pressure. (CS)

Discusses the two-capacitor problem by considering the self-inductance of the circuit used and by determining how well the usual series RC circuit approximates the two-capacitor problem when realistic values of L, C, and R are chosen. (GA)

For this 12-hour laboratory project students examine a model and explain why equipment is placed where it is, and then install some piping on the model. (BB)

Describes a laboratory activity which can be done with equipment normally available for introductory college courses. It measures the ratio of the radioactivity per unit mass of a unicellular alga to the radioactivity per unit mass of the medium in which it grows. (HM)

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.…