Ein engagierter Lehrer steht vor einem lebhaften Klassenzimmer und unterrichtet eine Gruppe von Kindern vor einer Tafel. - Stockfoto & -bild

Caring Teacher Explains Lesson to a Classroom Full of Bright Diverse Children. In Elementary School with Group of Smart Multiethnic Learning Science, Listening to a Teacher with Great Interest

Back view of schoolboy solving equations on chalkboard near teacher and multiethnic pupils

Children listening teacher in classroom at school

Brief revisal. Young male college professor is busy with explaining and revising the lecture he has given

Time for answer. Young attractive college professor points out at the student who wants to answer the question

Positive multiethnic pupils looking at blurred teacher

African american teacher reading book to pupils during lesson

Smiling pupil with notebook talking near erase board and classmates

Happy girl standing with book in classroom near african american teacher

Girl with book and positive african american teacher looking at each other while standing in classroom

Blurred african american teacher writing on whiteboard near pupils in classroom

Selective focus of happy boy looking at camera near blurred african american teacher writing on whiteboard

Smiling schoolkid with notebook talking near erase board and classmates