When a computer-based tool or application is used to carry out a specific task in a learning situation--that is, it is used for learning--more effectively or efficiently one speaks of learning "with" the tool or application. When, possibly, that same tool or application is used to enhance the way a learner works and thinks, and as such has effects…

Describes two studies that assessed decision-making skills using common cognitive errors and evaluated the impact of computer-based role-playing exercises on the development of these skills. Results with high school students, undergraduates, and earth science professionals are discussed which indicate that well-designed computer-based laboratories…

Describes the design of a hypermedia tool for helping preservice teachers learn about the growth and development of children's mathematical reasoning based on research in cognitive science, and discusses results of an experiment that used single-subject methodology to compare preservice teachers' learning with the hypermedia tool versus learning…