text: In a classroom, there are always a variety of expressions, mad, happy, upset, confused etc. Everyone is thinking something different about what they are learning. The text states that by using the Facial Action Coding System the teacher of the class could reference their "computer and be able to know if they need to explain the material more clearly, discuss something more interesting, or continue with what is being taught at the moment." This would allow the students to be more satifised with their school work and make them enjoy the material they are learning and comprehend it well.