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…

Briefly refers to the history, physiological background, and adaptive implications of two theories concerning the limits of sensory discrimination. An experiment is described, suitable for college and high school students, which investigates the validity of the two theories. (CS)

Describes an apparatus that offers a very lucid demonstration of Poisson statistics as applied to electrical currents, and the manner in which such statistics account for shot noise when applied to macroscopic currents. The experiment described is intended for undergraduate physics students. (HM)

Describes the British Gypsum, a school-industry science project, designed to link the school with local industry. Teaching strategy, some experiments, and evaluation of the project are also included. (HM)

Directions are given for caring for desert tortoises, both adults and young. Observations of their behavior are recommended. (SA)

The making of topographic maps is described as a sequence of the following steps: establishment of control, photogrammetry and field operations, annotation of photographs, stereoplatting, editing, preparation of color-separation plates, and printing. Precise standards are emphasized. (Author/SA)

Describes three activities: determination of the heat of combustion of a commercial breakfast cereal, qualitative analysis of halogens using hexane, and production of transparent soap. (CS)

Describes a science laboratory experiment that can be done at home with the assistance of parents or older siblings. It is offered as an alternative to reading assignments or answering questions for homework. Parental assistance is encouraged. (SA)

Discusses hazards associated with the permanganate demonstration of volcanic eruptions. Alternate demonstrations are described, including the ammonium dichromate reaction, lava flow demonstration with baking soda and vinegar, and punk to illustrate air pollution from volcanic ash and cinders. (CS)

Described is a junior high science curriculum which lists two purposes, emphasis on activities and studying science topics which are meaningful to early adolescents. A curriculum that offers opportunities for adolescents to explore each of the five senses and their attributes is outlined. (Author/DS)

Described is a method of studying growing crystals in a classroom utilizing a carrousel projector standing vertically. A saturated salt solution is placed on a slide on the lens of the projector and the heat from the projector causes the water to evaporate and salt to crystalize. (Author/DS)

Described is independent study research at Garden City High School (Garden City, NY) involving ten students studying seasonal beach erosion, salt marsh preservation, sludge leachate hazards in bays, and sewer outfall effects on barrier bays. Outcomes include better understanding of the scientific process and careful, accurate research. (Author/DS)

Project Oceanology, in Groton, CT, is a program concerning marine education. Objectives are listed as emphasizing potential and importance of Long Island Sound, development of marine science curriculum in biology, physical science and chemistry, training teachers to use materials and equipment, and developing liaisons between participating schools…

Presents background information, procedure, and results of an experiment, using easily obtainable chemicals and equipment, illustrating chemical kinetics. The experiment may be done in a letter as one four-hour physical chemistry laboratory period. (JN)