A description is given of an inexpensive nuclear magnetic resonance (NMR) spectrometer suitable for use in advanced laboratory courses. Applications to the nondestructive analysis of the oil content in corn seeds and in monitoring the crystallization of polymers are presented. (SK)

The development, role, and current research in particle physics at the Fermi National Accelerator Laboratory are reviewed, including discussions of its mission to understand the structure of matter, a brief history of particle physics, and the nature and applications of superconductivity, among other topics. (JN)

Suggests a practical approach for coping with training students in laboratory skill through the use of videotaped (VTR) materials and discusses the technical advantages of using VTR as opposed to laboratory research. Six references are provided. (MER)

Suggests the use of spores and spore-producing structures to show adaptations facilitating spore dispersal and dispersal to favorable environments. Describes several activities using horsetails, ferns, and mosses. Lists five safety factors related to use of mold spores in the classroom. (DS)

Describes a laboratory exercise which applies Koch's Postulates to a plant disease, bacterial speck. Includes an explanation of Koch's Postulate, list of equipment needed, advance preparation, outline of the three-week activity, and variations of the laboratory exercise. (DS)

Reviews and compares results of content analysis studies of selected high school science laboratory handbooks using the Laboratory Structure and Task Analysis Inventory (LAI). Findings from two biology, two chemistry, and two physics handbooks indicate highly structured investigations where students perform manipulative and observational…

The general mathematics curriculum improvement program undertaken at Procter Hug High School in Reno, Nevada is described. The mathematics laboratory is seen to be an indispensable part of the general mathematics curriculum. (MP)

Techniques are described for using living plants in the elementary science classroom including the germination and planting of seeds, transplanting seedlings, vegetative propagation, stem and leaf cuttings, and other plant studies. (DS)

The author visited 12 teacher-education programs in six southern and midwestern states. He reports on current practices in pre-student teaching laboratory training, student teaching, and extended campus programs. (SJL)

Compares three popular approaches to experiential learning with respect to purpose, philosophy, format, leadership, language, and strategy. Each is uniquely designed to elicit highly emotional involvement, confessions of failure in the past and immediate present, and attempts to communicate with integrity. (JMF)

Describes an undergraduate experiment which uses derivative spectroscopy to investigate the validity of the Planck function appearing in the blackbody radiation law. These measurements allow a critical examination of this function and also serve as an introduction to derivative spectroscopy techniques. (Author/HM)

Describes the use of a time-sharing computer and an x-y plotter in a variation of the laboratory exercise on the physical pendulum. (HM)

Describes a 9-hour organic chemistry experiment that involves the isolation of (+)-limonene from orange peels and conversion of this product into (-)-carvone. (CS)

Describes an advanced undergraduate laboratory experiment designed to give the senior chemistry student an opportunity to apply several synthetic and purification techniques as well as possibilities for the application of NMR spectroscopy. (CS)

When examining complex waveforms by examining oscillograms from simple resonant circuits, interpretation problems occur. These problematic oscillograms are explainable by recognizing that the typical resonant filters pass significant amounts of several harmonics adjacent to the one intended. Adjacent harmonics effects are computed; resulting…