In a class that instructs the operation of a personal computer, a teacher projects a screen with a projector, and the student performs operations while comparing it with the screen of their personal computer, in the general. However, frustration arises in both cases in the simultaneous progressive lesson. Because there is a difference in speed between students accustomed to the operation of personal computers and weak students. In addition, the line of sight moves frequently between the projector and the screen of their personal computer, which makes the students more burdensome. Therefore, in this research, improvement of the burden on the students in order to instruct the operation of the personal computer, we develop a system that instructs the target to be operated according to the situation directly in the screen of the student's personal computer.