Describes the Space Shuttle Commander software package, which utilizes the dynaturtle microworld to teach elementary and middle school students about Newton's laws of motion. Design considerations for computer-based microworlds that represent a compromise between the philosophies of constructivism and direct instruction are presented. (91…

Reviews the evolution of instructional systems design and computer-based learning environments, focusing on the effects of technological advances. Classification of learning environments is discussed in the context of the dimensions of scope (macrolevel or microlevel), user activity (generative or mathemagenic), educational activity (goal-directed…

Addresses Clark's position that media do not influence learning (EJ 294 173). The need to consider the capabilities of media as they interact with the cognitive and social processes by which knowledge is constructed is posited. This approach is examined within the context of two major media-based projects. Implications for theory, research, and…

Outlines curriculum reforms being made in the master's level educational technology program at San Diego State University. Topics discussed include technological changes and the roles of educational product designers; human information processing; knowledge base design; student design of educational adventure games; interactive video design; and…