Geometry Software Cabri 3D in Teaching Stereometry

In this paper we focused on some advantages of software Cabri 3D based on idea of comparisons students incorrect results of the stereometric tasks and visualization via software environment. In the theory of mathematics education which is concerned with development of spatial and geometric imagination, some experts and researchers agree in opinion that these imaginations are for a long-time underdeveloped in high school students in Slovakia. Based on the theory of didactic constructivism we present a few research excerpts from brief probes and studies which inquiries are face to face with possibilities of using geometric software to eliminate the problems' results.