The document discusses several approaches to classroom management and discipline, including the assertive approach, business management approach, behavior modification approach, group managerial approach, and group guidance approach. The assertive approach specifies rules and consequences, while the business management approach emphasizes task organization and keeping students focused. The behavior modification approach uses reinforcement and punishment to shape behavior. The group managerial approach responds quickly to issues to prevent problems, and the group guidance approach manipulates surface behaviors and understands group needs and interests.