Describes a laboratory teaching technique in which a single topic (in this case, bipolar junction transistors) is studied over a period of weeks under the supervision of one staff member, who also designs the laboratory work. (MLH)

The attitudes of 127 college students toward 30 different animals was assessed via a like/dislike questionnaire. Results indicated that female students disliked more animals than did males, and that non-Biology majors disliked more animals than did Biology majors. (SL)

Describes an experiment in which videotaping and classroom verbal rating systems were used to induce more higher level questioning by instructors in introductory physics laboratories. Concludes that teacher behavior can be modified or changed by setting instructional goals then receiving feedback. (MLH)

Discusses the formation, types, and climatic characteristics of deserts. Includes maps showing major deserts on every continent. (MLH)

Discusses efforts to determine the future of arid lands using climatic data of the past and present. (MLH)

Discusses the ecological depletion of American deserts and current efforts to apply scientific knowledge in solving the problems of arid regions. (MLH)

Describes technological advances in the reclamation of deserts and arid lands, including control of silt, underground irrigation, desert aquaculture, and desert revegetation. (MLH)

Describes some recent advances in enzyme structure and action, including a description of enzyme-substrate interaction. Discusses the methods for determination of amino acid sequences in proteins; the actions of chymotrypsin, trypsin, and elastase; and details of the enzyme-substrate complex derived from kinetic studies and x-ray diffraction…

Summarizes nine papers given at the Fourth Biennial Conference on Chemical Education that dealt with increasing the relevance of chemistry courses. (MLH)

Summarizes 18 papers given at the Fourth Biennial Conference on Chemical Education that dealt with innovative instructional methods or theories, including instructional objectives, audiotape-slide programs, and criterion-referenced evaluation. (MLH)

Summarizes 12 papers presented at the Fourth Biennial Conference on Chemical Education that dealt with suggested modifications in the ideas and terminology taught in a variety of chemistry courses. (MLH)

Describes the use of various indicators to demonstrate chemical reactions; the display of sodium as a shiny metal; and the illustration of the attainment of chemical equilibrium with beakers of chemicals and an overhead projector. (MLH)

Describes a computerized experiment in which the student determines the pk of an acid-base indicator from absorption spectra of the indicator at various concentrations. (MLH)

Contains information regarding pollen and human allergies. Lists most common types of pollen, describes pollen morphology, diagrams and apparatus for collecting pollen, and suggests laboratory activities such as pollen counts, pollen concentration, dispersal, and meteorological effects. (CS)

Examines recent studies of the elimination-addition mechanism of acyl group transfer, in which an acid function moves from one acceptor to another. Presents diagnostic evidence for this mechanism and discusses acyl group transfers in metabolism. (MLH)