1. I think that "always show you mean business" means to be straight forward and show that you are not going to let things fall below your set standards of how to behave.

2. I think that that when you give rewards and praise for participation it makes people want to continue their good participation to receive that reward or praise again.

Rewarding her students gives them the desire to want to learn.

1.  I think "always show you mean business" means that a teacher should always communicate clear and firm  expectations.  2.  Ms. Hall encourages participation by using both verbal and visible awards. She also keeps the conversation moving to prevent student from becoming bored and checking out.  

Positive classroom environment is one that supports student achievement.  Positive reinforcement is one branch of

the tree.  By giviing support and encouragement (even if the student failed the objective) we create an atmosphere of learning, growing and achievement.

Positive Reinforcement is important, it's always nice to hear, "Good job!" when your trying your best. I like how the Teacher varied her positve reinforcement; A) She offers verbal praise generously. B) Students have a "Big-Up-Wall" that they can post stickers they recieve as positve reinforcement to keep a record and visually see how much praise they have collected. C) The highest form of reinforcement is a praise card which is hard like a credit card and signed by the teacher. This is cleary valued by the students who recieve it in the video.