How do you deal with the uneven distribution of audience participation in a classroom setting? Some seem very eager to participate in class and are always willing to offer an answer while others always try to hang back in the back of the room and coast through the presentation. How might you engage the guys in the back in answering the questions to guage how they are retaining the information presented? I find that even if you ask them specifically, they often seem too timid or unsure to offer an answer and it's hit-and-miss performance from many of them on the tested material.