Der Lehrer erklärt dem Schüler die Lösung einer Mathe-Aufgabe an der Tafel. - Stockfoto & -bild

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

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

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

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

Male teacher scolds female student wrong answer.

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.

Teacher and student near chalkboard. College university education. High school. Solving task. Man writing on chalkboard math formulas. Teaching in university. University education. Knowledge transfer.

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

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

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

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

A man's hand and a woman's hand on background of a blackboard. The concept of school love.

The dean scolds the teacher of the Institute for an unfinished report.

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

A girl schoolgirl is tired tends to sleep with fatigue, put her head on the school board