In this study, we investigated that whether Cabri 3D can be a useful tool for teaching analytic geometry of space or not. For this purpose, we focused on solving some traditional spatial analytic problems by using Cabri 3D. Experiments were conducted with 24 prospective high school teachers who had a mathematics degree and were attending the postgraduate teacher training course. Results of the study show that Cabri 3D is potentially very useful software for learning and teaching spatial analytic geometry. Another important result of the study is that Cabri 3D facilitates understanding by visualizing. (C) 2010 Elsevier Ltd. All rights reserved.