Der Lehrer an der Tafel fragt lächelnd nach der Antwort des Schülers, der an seiner Hand zieht. - Stockfoto & -bild

The teacher stands at the blackboard and asks student to answer with a hand gesture.

The teacher stands at the blackboard and asks the student to answer with a hand gesture.

A student explains to the teacher the solution of problem at the blackboard.

Young student writing chemical formula at the blackboard

Young student girl takes an exam near the blackboard.

A student explains to the teacher the solution of the problem at the blackboard.

The teacher explains to the student the solution of a math problem at the blackboard.

A teacher writes a solution to a math problem with chalk on a blackboard.

Male teacher scolds female student wrong answer.

The teacher is standing in the classroom at blackboard with chalk in her hand.

The teacher is standing in the classroom at the blackboard with chalk in her hand.

The headmaster scolds the teacher for doing a bad job waving his hands.

Mathematics teacher writes in chalk on a blackboard with his back to the class.