L'insegnante si trova alla lavagna e chiede allo studente di rispondere con un gesto della mano. - Foto e immagini stock

The teacher at the blackboard with a smile asks the answer from the student who pulls his hand.

Woman doing her business presentation

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

Female teacher standing in formalwear near chalkboard and holding glasses

A brunette teacher in the classroom at the blackboard writes tasks for students with chalk.

An adult teacher at the blackboard explains the solution of a math problem to his student.

A student at the blackboard at the institute at department passes an exam in mathematics to the teacher actively explaining her solution to the problem.

A student at the blackboard at the institute at the department passes an exam in mathematics to the teacher actively explaining her solution to the problem.

A frustrated teacher leaves her school classroom with a box of personal belongings in her hands.

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

Professor of the Department of Applied Mathematics in classroom at the blackboard writes formulas for students.