text: The Facial Action Coding System could help teachers see if a student is understanding a topic or lesson. It could do this by detecting their facial expression then letting the teacher know if changes need to be made. This would help because it allows the teacher to know if thier methods of teaching are acually being of value to the student. This claim is supported because the article includes "By weighting the different units, the software can even identify mixed emotions." This supports the claim because it shows that the software can identify not only one emotion but serveral. "Eckman has classified six basic emotions- happiness, surprise, anger, disgust, fear, and sadness- and then associated each with characteristic movements of the facial muscles." The technology can analize and detect certain emotions and allow the teacher to see all of them and make modifcations if they are needed.