Teaching methods which used by the teachers in Senior High School department mostly based on student-centred method. This method will make the teacher act as facilitator of the students. Usually the teacher will use lecture as a teaching method to introduce a new topic to the students. Sometime the teacher will mix with discussion method as part of student-centred learning method to ensure that the students understand the topic very well. In the middle of the class, the teacher will give several topics to be discussed in a group for several minutes.Then, they will be given time to present their discussion result to other classmates. At the end of the class, the teacher will make a conclusion with their students and give some exercises to do at home.