Abstract
We have developed a 3D-CAD education system based on computer assisted instruction (CAI). This system consists of lectures using an animated manual, exercises using an electronic text, evaluation using a 3D-CAD check function, and guidance using the study history. This system performs all the lessons except for the guidance. Thus, it can be used by a single teacher with a class of many students, similarly to a conventional school. However, since both beginners and people experienced in 3D-CAD may be present in the same lesson, there is a problem of progress in lessons. Thus, we have developed a function that automatically creates exercises on subjects suited to the student's modeling capability. This paper gives an outline of this function (exercise subject creation function), and its effectiveness as an educational tool.
