The purpose of this paper is to familiarize instructional designers and researchers with a useful design and research paradigm known as "Ask Systems." Ask Systems are interrogative interfaces to information and learning environments that model conversations with a skilled, reflective practitioner (Schon, The reflective practitioner, "1983") or…

Provides an overview of the transition from traditional, programmed instruction to computer-assisted instruction, including concepts and history affecting instructional environments. Describes the focus of articles that follow, including methods for navigating and learning from hypermedia systems; point and query interface; story-based learning…

Discussion of the development of intelligent tutoring systems (ITS) using expert systems and hypertext focuses on the Physics Tutor, a prototype ITS built with off-the-shelf software to test the utility, practicality, and generalizability of the ITS concept. Expert models and student models are explained. (Contains 27 references.) (LRW)

Defines the functions of windows that are used as visual display techniques in computer software systems, reviews research on the effectiveness of window environments, discusses knowledge structures, and presents principles for designing windowed environments based on research findings and individual differences and screen design research. (10…

Hypertext is well-suited for educational applications where open learning and knowledge exploration is desired. In such applications, principles of good hypertext interface design should be employed to avoid navigational problems so as to maximize learning. Interface design, however, may also directly enhance acquisition of a particular knowledge…

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…

Cognitive tools, computer-based applications normally used as productivity software, can also function as knowledge representation formalisms that require learners to think critically. Databases, spreadsheets, semantic networks, expert systems, and multimedia/hypermedia construction can function as computer-based cognitive tools to expand student…