text: First, you could tell how the students are really feeling. In paragraph 9, the author states "According to the Facial Feedback Theory of Emotion, moving your facial muscles not only expresses emotions, but also may even help produce them." This means if a teacher sees an upset student, the teacher can tell them to make a happy face and eventually the student won't be as upset. It would help everyone be happy because everyone will "... unconsciously imitate another person's facial expressions."