. The role of teachers with the teaching of the change. Introducing the new material, or presented for group discussion or investigation of the problem or task, the teacher acts as the organizer and guiding role. Group cooperation and exchanges when the teacher's role becomes a facilitator and colla

. the role of teachers with teaching the change for the sake of change. In introducing new material, or for the panel discussion or investigation of the question or task, teachers act as the organizers and guiding role. Group cooperation and exchanges, the role of teachers also turned into a facilit