Behaviorism is a theory that human behavior can be explained in terms of conditioning and reinforcement. It proposes that behaviors are shaped through consequences like rewards and punishments. Ivan Pavlov and B.F. Skinner developed classical and operant conditioning which use reinforcement to influence behaviors. Albert Bandura expanded on this with social learning theory, proposing that people also learn from observing and imitating others, not just consequences. Teachers can apply these concepts by setting up reward systems to encourage positive behaviors and punishments for undesirable behaviors. This helps motivate students, especially young children, to follow rules and complete their work.