text: My reason for saying why we should use technology to read the emotional expressions of students in a classroom because in the text it says in pragher 6 '' A classroom computer could recongnize when a student is becoming confused or bored,''.'' Then it could modify the lesson, like an effective human instructor. By saying in other worlds when u get confused or bored the computer can try different things like make the lesson a little better and fun and slow it down for you and try different ways to keep u on track and in gagens.