In this study we analyzed characteristics of activities of junior-high-school teachers, and got some insights of the teachers-room. Teachers' time is severely restricted. Particularly, in the 10-minute-free-time they must manage many tasks, as the school building plan intends. When teachers' working space is under much attention of students, individual guidance and grading is difficult. When the teachers' rooms are separated, teachers need much time to move, so it is difficult to rest and work

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... n the 10-minute-free-time. Also, they have less communication, and have more trouble under sudden accidents on students.