Describes a number of activities relating to the observation and study of trees. (SL)

Describes a method of calculating the power applied to an electric lamp by using a calorimeter to measure the energy radiated by the lamp. (SL)

Short articles cover subjects including the rising school age population in the 1980's, a planetarium show on life in the cosmos, a student lead poisoning detection program, a report on a religiously-based science text, a health survey by Current Science magazine, and a student weather station. (AJ)

Collections and classification activities are the topic of this article. Ways to structure an outdoor collecting venture are discussed. Once the materials have been collected, there are suggestions for introducing young children to the task of classifying their rocks, leaves, shells, and other collected items. (MA)

Presented is a unit composed of activities for teaching weather. Topics include cloud types and formation, simple weather instruments, and the weather station. Illustrations include a weather chart and instruments. A bibliography is given. (MA)

Contains contributed suggestions for laboratory equipment, chemistry activities, and explanations of chemical reactions. (CP)

Suggests activities that allow three- to eight-year-old children to experience science in their everyday world. Science experiences can spin off into art, music, mathematics, literature, and other areas of the early childhood curriculum. (BB)

Explains how a flashlight can be used to introduce a unit on blood, muscles, and bones for elementary science students. Describes activities which focus on anatomical features. Includes a diagram of a paper hand which is used in one of the investigations. (ML)

Provides suggestions for activities that focus on earthworms. Includes observational exercises on earthworms' reactions to light and touch. (ML)

Explains how to establish and maintain a woodland terrarium. Points out how this environment can be used to study animal interaction and can serve as a focal point for learning about a variety of elementary science concepts. (ML)

Presents activities and experiments that can be performed with mirrors to illustrate the nature and behavior of light. Includes diagrams, directives and investigative questions. (ML)

Discusses four different methods for measuring self-inductance based on the definition of inductance, the alternative definition, phase difference and LC resonance. Provides circuit diagrams and typical oscilloscope traces. (YP)

Describes a soap film demonstration apparatus. Presents information on the construction of the apparatus and methods for thin-film demonstrations. (YP)

Describes a science activity designed for undergraduate biochemistry classes. Provides background, a list of materials, experimental procedures, and the results of this experiment. (CW)

Presents a practical exercise that enables students to measure flux control coefficients in a metabolic pathway in vitro, to verify the summation property, and to compare the differences in the distribution of these coefficients in different steady states. Discusses background, materials, methods, and results of the activity. (CW)