text: It's impotant to know what students are feeling to make sure they are comfortable, genuinely happy and interested. Since this technology can calculate the emotions from the way muscles contract on your face, it'll be easy to detect a problem without asking them when they can easily lie. You need to keep the students interested because if they are not interested in what you are teaching then they will not pay attention and won't get anything from the lesson at all. With this technology, they can have a better chance of getting better grades or have a better prespective on the subject.