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…

Defines cognitive computer tools as software programs that use the control capabilities of computers to amplify, extend, or enhance human cognition; suggests seven ways in which computers can aid learning; and describes the "Learning Tool," a software package for the Apple Macintosh microcomputer that is designed to aid learning of…

Reviews conceptual bases for hypertext, relates them to hypertext design issues, and suggests research issues that need to be addressed. Topics discussed include cognitive psychology; schema theory and semantic networks; problems with hypertext; knowledge structures; software; inductive and deductive design methods; and expert systems. (12…