This text examines the Mindtool concept - alternative ways of using computer applications to engage in constructive, high-order thinking about particular areas of study, thus extending learning outcomes and expectations beyond recall and helping learners become self-directed critical thinkers. Jonassen presents: a rationale for using Mindtool; in-depth discussions of the indiviidual Mindtools and their use; and suggestions for teaching with mindtools and evaluating the results.