Expands on constructivist theories that were discussed in an earlier issue. Highlights include cognitive flexible theory; multiple knowledge representations; prespecification of knowledge; teaching content versus skill; and cognitive flexibility hypertexts (CFHs), including the kinds of knowledge domains for which they should be used and the…

Describes a Macintosh computer-based Instructional Development Model (IDioM) that provides a platform upon which an expert system for course development can be constructed. Goals of IDioM are explained, including instructional design and facilitating the development of interactive training courses; the use of HyperCard is discussed; and future…

Describes tracking tools used by designers and users to evaluate the efficacy of hypermedia systems. Highlights include human-computer interaction research; tracking tools and user-centered design; and three examples from the Interactive Multimedia Group at Cornell University that illustrate uses of various tracking tools. (27 references) (LRW)