If I have the second chance?

If I were to deliver the similar lesson again, I would make some changes. I will change the tasks and exercises. As a teacher, he or she should provide a variety of exercise or tasks to students. I would like to add some exercise that need to do in group. In addition, I also will speak louder in the class. Although my course-mates were able to hear my voice during my simulated teaching, I should speak louder. Why I say like this? My tutor told me that during a real classroom, the students are not that obedient. They might be very noisy in classroom. If I still speak softly, I might have trouble because I cannot control the class.