Both positive and negative feedback are important when teaching your class. Students need to know if they are doing the skills correctly and feedback helps them. It also lifts their confidence because when you say something to them they know your watching. This also can help misbehavior because if students know that your watching then they are more likely to not go off and do something their not supposed to. You want to be sure to add both kinds of feedback. You want to address the entire class and also individually. This way kids know that the comment is directed just to them. I think feedback is important to set a good environment in a classroom.