Discusses the effect of silhouetting a vertical vibrating string against a television screen. The article also reports the usefulness of the effect in tuning stringed instruments and as a possible basis for lecture demonstrations and student discussions and investigations. (HM)

Guidelines are presented for selecting the kinds of animals to bring into the elementary classroom as pets. (SA)

Describes an experiment for the use of a tilted plane as a two-dimensional uniform gravitational field to demonstrate the motion of projectiles, to determine the fundamental laws of mechanics, or to study the focusing properties of the uniform field. (SK)

Described are several activities to be used to help students grasp the concept of floating. The activities include the use of a spring scale to measure the weight of the objects in air, in water, and in salt water, and a discussion of why there are differences in these weights. (DS)

Describes several elementary science learning experiences and activities concerning the concept of space. Activities described include tracing children's shadows at different times of day, moon observations, and planetarium activities. (DS)

Describes how a group of teachers of high school and university physics in the Chicago area exchange new ideas and teaching techniques with each other. (HM)

Described are activities designed specifically for visually impaired students, demonstrating (1) meiosis, (2) mass, (3) enzyme-substrate reactions, (4) function and relationships of flowering parts. Employed are tactile and auditory learning aids, such as the tape recorder, electric eye, Braille typewriter, textured fabrics, and three-dimensional…

This experiment demonstrates the reduction of inorganic sulfate to sulfide in the pore water of estuarine muds. Procedures involve the incubation of mud samples for varying amounts of time followed by gravimetric determination. (Author/SA)

Reviews a curriculum series entitled Examining Your Environment published by Holt, Rinehart and Winston of Canada, Ltd. Unit organizations, teacher's guides, activities, and materials are discussed. (SA)

Suggested are ways in which an elementary school teacher, through a take-home newsletter, may encourage parents to become involved in science learning through activities at home, out-of-doors, and on trips and science walks, through using picture books, and in selecting gifts. (CS)

A series of ten secondary-level, winter ecology experiences developed to accompany the BSCS Green Version is discussed. Results from a review by a panel of experts and ratings from experimental teachers are presented. (SA)

Describes how to construct a game for elementary children who need to acquire skills in ordering or sequencing of items. Suggestions for its use in instruction are given. (SA)

Describes a San Francisco, California, science museum whose design is based on the exploration of perception. The museum is arranged in sections on patterns, light color, eye logic, third dimension, sound, hearing, electricity, and the tactile gallery. Programs include teacher training, student learning experience, field trips and study projects,…

Describes an experiment, designed for use in the undergraduate laboratory, that measures the bond energies of molecules using a small commercial mass spectrometer and low-cost digital voltmeters. (BT)

Presents seven selected middle school science activities which could be used in school science courses. (HM)