This paper describes the highlights of a review of both commercially available videodiscs and research prototypes that was undertaken for the Interactive Videodisc Project, and sets out design principles suggested by the best examples, which take advantage of the unique characteristics of laser videodisc technology. Design options on three levels…

Describes a HyperCard-based simulation/tutorial for the Macintosh that is designed to teach users to search the Medline CD-ROM database on an IBM microcomputer. Results of a user survey are reported, and the potential of HyperCard for bibliographic instruction, including the use of the tutorial to develop transparencies, is discussed. (MES)

This paper presents a model for designing computer-based simulation environments within a constructivist framework for the K-12 school setting. The following primary criteria for the development of simulations are proposed: (1) the problem needs to be authentic; (2) the cognitive demand in learning should be authentic; (3) scaffolding supports a…