B.F. Skinner's operant conditioning theory focuses on using the consequences of behaviors to change future behaviors. There are four types of operant conditioning: positive reinforcement, negative reinforcement, punishment, and extinction. As teachers, it is important to point out the consequences of students' actions and encourage them to change negative behaviors. When analyzing a teacher's actions, positive reinforcement can encourage students who perform well to strive for better results, while negative reinforcement avoids punishment and instead encourages students through appreciation of effort.