An elementary activity based energy education unit which utilizes student contracts is described. Examples of the preparation involved, student involvement entailed, and examples of contracts and grading criteria are included. (DS)

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)

Activities are described which provide opportunities for students to make the connection between the wind's variable force and energy. Outdoor activities with the wind, toys that use the wind, a wind walk, and integrating personal experiences with the wind are topics of activities included. (DS)

Describes a simulated field experience to study stream ecology in the classroom. Secondary students determine the composition of the stream community, describe the distribution of the benthic invertebrates, and design a food web. (Author/MA)

Presents six selected chemistry notes which could be used in school chemistry courses. Each includes the name of the author and a description of activities suggested. A reading list is also presented. (HM)

Presents ten selected physics notes which could be used in school physics courses. Each includes the name of the author and a description of activities suggested. A reading list is also presented. (HM)

Describes scope and significance of a high school water monitoring project and discusses problems and solutions related to water testing in general and winter water testing in particular. Discussions of stream velocity, stream flow, biotic index, and coliform bacteria tests are included. (DC)

Describes the Pocono Environmental Education Center (PEEC) in Pennsylvania which seeks to develop the knowledge, skills, values and attitudes necessary to improve the relationship of man to nature and man and man. The facility is utilized for elementary student activities, teacher workshops, handicapped programs, and college university groups. (DS)

Discusses the oscillatory motion of a mass on a spiral (nonhelical) spring, and calculates the lowest eigenfrequency and the associated effective spring mass for a range of values of the attached mass. Analytic and numerical comparisons are made to the helical spring problem. (HM)

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…

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)