Strictly speaking, classroom management refers to the way a teacher runs a lesson. Each teacher has a different system that develops consciously or unconsciously, to facilitate student learning.
When running a lesson, you have to bear in mind that the choices you make will affect students’ learning and behavior. Whether or not your students feel confident and motivated will depend on these choices. In your lessons, you may include some techniques in order to achieve a specific aim. Behind every technique you use, there has to be a clear teaching intention.