How should I expend my energy as a teacher?

Answer) Before class has begun, in preparation for my lesson. ‘Teaching without telling’ is preceded by comprehensive planning. It could also be called teaching by planning. As you prepare for a lesson, think of arranging a classroom in such a way that your students will immediately know what they have to do, without you saying a word. The idea is for you to spend your energy in the planning, and become a facilitator when the class begins, moving around the room having interesting conversations about student work, rather than being tied to the board trying to talk your students through your thinking.