PLUS, an authoring system designed to develop cross-platform courseware for different computer types, was evaluated for its portability (ability to run on multiple platforms without adjustment). The procedures and computer equipment used are described, and results are presented. It is concluded that PLUS produces highly portable programs. (MSE)

A framework for examining the effectiveness of different types of educational computing environments addresses the conceptual characteristics of the knowledge domain being learned and the learner's stage of knowledge. Characteristics of certain technology-based learning environments (computer-based drill, intelligent tutoring systems, hypertext)…

R-WISE (Reading and Writing in a Supportive Environment), a computerized package for teaching critical literacy, is described, focusing on its use in developing reading comprehension. The program eases demands on short-term memory, highlights strategically important aspects of comprehending text, guides internalization and self-initiation of…

Literature on the influence of computers on learning in formal classroom and informal out-of-school contexts is reviewed, and the primary policy considerations in diffusion of computer-based educational technology are examined. The article suggests that the boundaries between formal and informal learning environments can be overcome with…

MediaMatrix, a new, computerized instruction, authoring system, enables instructional developers to build adaptive programmed instruction and adaptive testing systems. Instructional development can focus simultaneously on systematic improvement of comprehension and problem-solving skills while providing for adaptive content presentations that…