Objectives of this study were to create a prototype of an interactive hypermedia textbook and to explore the relationships between learners' performance and use of available learning tools (i.e., textbook glossary and navigation map). The effects of prior knowledge on textbook use and performance were also investigated. (11 references) (EA)

Presents results of a 1991 national survey conducted in The Netherlands that investigated the use of computer-assisted learning (CAL) in higher education. Topics addressed include academic disciplines using CAL; types of CAL, including drills, tutorials, and simulations; level of learner control; authoring languages and programing languages; and…

Discusses conceptual difficulties in the field of geometrical optics and describes RAY, a microcomputer-based graphic interface that was designed to serve as a teaching aid and as a learning environment. The ability to combine theory and formal representations with real demonstrations and experiments is discussed. (Contains seven references.) (LRW)