Explains a general theory of mathematical knowledge and its acquisition, and discusses the design of instructional computer use, including software, based on that cognitive theory. A programing language called ISETL is described, and preliminary investigations are presented on students' learning about sequences, convergence, and limits. (five…

Addresses cognitive style and visual literacy in use of instructional computing, focusing on learner interaction with screen displays and ways cognitive style and visual preferences facilitate or inhibit learning, and asks whether having computers in classrooms is only a case of utilizing another form of television. Research areas are suggested.…

Discusses the use of computer simulations in an instructional context and emphasizes the need for learner support. The SIMULATE project (Simulation Authoring Tools Environment) is described, the concept of intelligent simulation learning environments (ISLEs) is explained, and a conceptual framework for articles included in this issue is presented.…