Describes the inadequacies of the current software for computer-based instruction, and presents a framework of instructional components to guide the design of such software. A taxonomy of design considerations is then discussed, including instructional context, strategies, and technical capabilities that can be used to enhance instruction. (4…

This survey of the literature provides a review and synthesis of research findings and current thought on the use of microcomputers by school children. Modes of learning and taxonomies of learning are described, and the results of recent surveys indicating the number of computers in schools and the amount of access by students are reported.…

Offers an approach for teaching a unit on classification that combines various software programs with traditional science teaching methods. Provides procedural directives for the activities and explains the objectives of each exercise. (ML)

Discusses the need to take into account the effects of arrested fractional crystallization in the petrographic classification of volcanic rocks containing plagioclase phenocrysts. Describes the development and use of a computer program to accomplish this task graphically. (TW)