Realization of a decision-making support system within a whole

In order to catch the understanding of students within a whole class, the test support system has been developed, (see [1]) As a result of using this system in a real class, it is obvious that this system contributes an improvement in the understanding. On the other hand, it is not easy for the instructor to make the appropriate decision immediately because there is a lot of information that is shown to the instructor. Then, in this study, we will lighten the instructor's burden of a decision - making and develop a decision - making support system to support making an effective decision. The mechanism of decision in this system totals the data of a real class situation collected with LAN and the predicted data of a class situation that is determined by the instructor in the stage of instructional plan according to their point of view in the system. It also makes a guideline that becomes the interim data. This system applies the interim data to the rule of decision making and shows the advice that is needed for the instructor. This system has the explanation mode and the questioning mode. In an explanation made, the system searches for a point that confuses students and advises them. In a questioning mode, the system analyses achievement situation of a whole class and shows advice.