Discusses the use of shadows to explain such scientific phenomena as umbra and penumbra, eclipses, day and night, seasons, and length of day. Indicates that shadow plays can serve to help the students in understanding more about light. (CC)

Addresses questions on classroom and lesson organization, objectives for primary science instruction, and concerns about teacher preparation in the scientific field. (GS)

Describes water-related activities in an elementary school science project. These activities focus on electric generators, rainfall, erosion, floating, water conservation, and other areas. Brief comments on developing such a project are included. (JN)

Provides lists of instructional strategies for elementary school science focusing on: (1) the biological sciences; (2) forces, movement, and energy, and (3) the physical sciences. (JN)

Suggests some of the basics and reasons for teaching balance. Explains how the concept of a cantilever can be used. Describes 25 activities for observing, testing and learning about balance. (CW)

Illustrated are five classroom projects about the relationship between weight and size in animals. Background information and procedures are provided. Ten extension activities are suggested. (CW)