Three different versions of a learning program on trigonometry were compared, a program controlled, non-interactive version (CG), an interactive, conflict inducing version (EG 1), and an interactive one which was supposed to reduce the occurrence of a cognitive conflict regarding the central problem solution (EG 2). Pupils (N = 101) of a…

The reported exploratory study consisted primarily of classroom visits, videotaped sessions, and post-treatment interviews whereby second graders (n = 12) worked on problems in planar geometry, individually and in triads, using physical and virtual manipulatives. The goal of the study was to: 1) characterize the nature of geometric thinking found…

Describes a study that investigated preservice elementary teachers' decisions about teaching strategies and their attitudes toward mathematics and computer-related technologies in a constructivist-centered methods course which included the use of problem-solving multimedia. The effectiveness of these strategies in developing more positive…