Evaluates six "open" (empty of content and customized by users) software programs using the literature-based characteristics of documentation, learner control, branching capabilities, portability, ease of use, and cost-effectiveness. Interviewed computer-knowledgeable individuals to confirm the legitimacy of the evaluative characteristics. (LRW)

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…