The purpose of this paper is to consider the factor which makes it difficult for the teacher to recognize an " event " about the class. In this paper, it set the hypothesis that teacher's consciousness of the formulating a teaching plans determines the conduct of the teacher. Then it pointed out that the fact of teacher's consciousness had two viewpoints . The one is the viewpoint of the researcher, and the other is the viewpoint of the teacher. Then if teacher adopts the former's viewpoint strongly, the conduct of the teacher in that class tends to be solid. In order to avoid fixing conduct, teacher examines his consciousness. In conclusion, teacher has the dilemma between the theory and the practice. But this dilemma makes students the formation of learnig.