Oh, a friend of mine is a teacher at a primary school. Students are annoyed of everything happening around because they have a big window in every classroom and their doors are open that could transmit some sounds from the outside. What she did for her students to concentrate on his teaching, she do some exercise before starting the class. The exercise is literally and exercise. Just a little stretching for them to wake up. She even says a magic word like she give additional rewards or points to the student who can answer her question. She even share a joke while teaching that everyone is laughing to her, it keeps them awake and after that they will concentrate of what she was about to say because they might be waiting for another joke to come out. She got her success because she is consistently doing it everyday.