The group discussions enable students to cooperate with each other and to pay attention to various opinions when other students express their opinions. Meanwhile, the teacher can observe how individual student participate in the discussion (Graves, 2000). The observation can be considered an effective instrument in the course. Because most of the students come from other countries, the students do not feel overwhelmed and anxious when the teacher "silently" assesses students' performances. Through observing, the teacher can judge students' interests and learning preferences (Graves, 2000). When observing the group discussions, the teacher can fill out the following sheet.