Describes a single geometrical diagram based on the Lenz vector which shows the qualitative and quantitative features of all three types of Coulomb orbits. Explains the use of a simple analog computer with an overhead projector to demonstrate many of these effects. (Author/CP)

Describes an experiment in which a college student learned flight principles on a flight simulator, then flew an actual plane with no need for assistance from the accompanying instructor. (MLH)

Describes the Training in Education for Assistants in Chemistry (TEACH) program, which provides written and videotape materials to departments of chemistry for training their teaching assistants. (MLH)

Describes a chemistry project in which lichens are identified by the analysis of the phenolic substances that they biosynthesize. (MLH)

Discusses the use of reaction mechanisms rather than functional groups as a basis for organizing and teaching organic chemistry. (MLH)

Describes active joint-honours degrees at the University of Manchester. These degrees involve five different science departments, contain approximately equal amounts of two major subjects and mathematics, at least in the first year.

Describes a lab demonstration that illustrates the effect of different colors or wavelengths of visible light on plant growth and development. This demonstration is appropriate for use in college biology, botany, or plant physiology courses. (HM)

Discusses the potential use, by students in cell biology and plant physiology, of isolated chloroplasts for determining the Emerson enhancement effect. The experiment designed to measure spectrophotometrically the photoreduction of a dye by illuminating chloroplasts with short- and long-wavelength light is presented. (HM)

Presents mathematical models appropriate to describing and analyzing competitive interactions in an ecological system. (MA)

Studies the relationship between Eulerian and Lagrangian coordinate systems with the help of computer plots of variables such as density and particle displacement. Gives examples which illustrate the differences in the shape of a traveling wave as seen by observers in the two systems. (Author/GA)

Describes a simple method, the Edser-Butler methods, for calibrating the Fabry-Pevot fringes seen in the focal plane of a spectrograph. (GA)

Describes the current understanding of the structure and evolution of the white dwarf stars that was gained as a result of the increasingly sensitive and detailed astronomical observations coupled with calculations of the properties of matter under extreme conditions. (Author/GA)

Explains that some nuclear scattering phenomena can be attributed to states in which two nuclei are bound to each other at their surfaces, revolving and vibrating for a time before coalescing or disintegrating. (Author/GA)

Explains how movies made from computer output data of complex numerical models offer perceptual advantages that can speed the recognition of unexpected behavior and encourage fruitful discussion. (Author/GA)

Outlines some specific approaches and ideas that will add a new dimension to an introductory college biology course rendering it more motivational, personalized, and meaningful to the students. (GA)