Describes the objective behind this special issue: to identify a science content area (physics for eighth to eleventh graders), work with science teachers to produce a set of content materials, and present a common content outline to a group of instructional designers. The first article describes the derivation of the content outline. The next…

Discusses designers' need to design educational software for subversive use, recognizing that users fit the use of technology-based environments into contextually tuned "situated" learning environments. In this sense, good design is volatile design, or design which changes with contextual use. These ideas are illustrated with reference to a range…

Explores why "learning" and "object" have been combined in the field of instructional technology. Examines why current definitions of these terms are lacking when looked at from a standards and interoperability point of view. Suggests a new definition with a rationale to satisfy needs of technologists for precise, practical…