text: When in school, you can use your facial expressions to show how you are feeling. In paragraph 6, the author goes on to explain that, "'A classroom computer could recognize when a student is becoming confused or bored,' Dr. Huange predicts. "Then it could modify the lesson, like an effective human instructor." Several teens do not speak up when they do not understand something that was taught during class because they do not want to be embarrassed. So if you are at home, on a computer, you will not have to speak up you can just act the same, and the computer will change it to help you understand more efficiantly.