text: The first reason is the Facial Action Coding System is valuable because it help the teachers identify the emotion of their student. It said in the article "a classroom computer could recognize when a student is becoming confused or bored". Some of the students in the school won't talk about how they are feeling in the classroom, and some of them would be scared to ask question when they are confused. The new technology would help the teachers so much on how to find out if their students are understanding the works they did in the classroom.