Today because of so many distractions and everything being so fast pace it is so important to bring your students in and motivate them to achieve the necessary outcomes/objectives of the classr. Always present yourself (the teacher) in positive nuturing environment. The way you articulate your voice and the way you represent yourself as professional will make a major impact on you in classroom and with the students in the room. So always be enthusiastic and make sure you speak to your students just as you were publicly speaking to audience. Students will appear happier when you market and present yourself in a positive professional manner always.