Development and Evaluation of a Mental Model Forming Support ITS - the Qualitative
                     Diagnosis Simulator for the SCS Operation Activity

                     In this study, we built an educational qualitative diagnosis simulator, which models SCS (Space Collaboration
                     System: system the remote conferences and education via satellite communications) conferences. A student
                     engages in the conference, by operating a control panel and proceeds by making the necessary selections
                     according to the agenda of the virtual conference, and its intention and purpose, which can change at any time.
                     The purpose of this study is supporting the student to form a correct mental model in this environment. Therefore,
                     we incorporate an abstract model of possible computations as a logical circuit attached to the SCS system. Using
                     this model, the system has two functions: to diagnose the student’s conceptual understanding mistakes about the
                     SCS system and to explain to him/her the cause of these mistakes. With these functions, we expect to be able to
                     support the student in forming a correct mental model and in understanding the SCS essentials.