Mann mit Bart auf weißem Backsteinhintergrund. Professor mit ernstem Gesicht sitzt am Schreibtisch. Lehrer und Schulmaterial im Klassenzimmer. Schulbildung und Wissenskonzept. - Stockfoto & -bild

School education and knowledge concept. Man with beard on white brick wall background. Professor with happy face sits at desk. Teacher and school supplies in classroom.

Tutor and school supplies in classroom. Studying and education concept. Professor with beard and glasses on white brick background. Man with happy and thoughtful face sits at desk with rolled paper

Professor with thoughtful face expression sits at desk. Teacher and school supplies in classroom. Education and knowledge concept. Man with beard on white brick wall background.

Professor in glasses with serious face writes in book. School education and knowledge concept. Teacher and school supplies in classroom. Man with beard on white brick wall background.

Portrait of male teacher from preschool or elementary school in class. Funny tutor

Professor with thoughtful face expression sits at desk. Teacher and school supplies in classroom. Education and knowledge concept. Man with beard on white brick wall background.

School education and knowledge concept. Teacher and school supplies in classroom. Man with beard on white brick wall background. Professor with serious face holds pencil

Portrait of male teacher from preschool or elementary school working at desk in class. Mature man sitting relaxing in a classroom looking at the camera

Education and knowledge concept. Professor with thoughtful face expression sits at desk and writes. Man with beard on white brick wall background. Teacher and school supplies in classroom

Professor with happy face having idea. Teacher and school supplies in classroom. Man with beard on white brick wall background. Education and knowledge concept.

Man with beard on white brick wall background. Education and knowledge concept. Teacher and school supplies in classroom. Professor with busy face expression sits at desk and prepares for lesson

Face kid for magazine cover. Girl kids face portrait in your advertisnent. Kid and man at desk with school items. Back to school and science concept. Girl and teacher in classroom on white wall

Portrait of confident caucasian male teacher in classroom. Man tutor or young professor. School teacher at desk. Studying, learning, training concept

Cute little preschool pupil and serious teacher in a classroom. Cheerful smiling little girl in school uniform having fun in classroom

Portrait of thinking male teacher in school classroom. Serious teacher man sitting on desk writing text in book at school classroom

Young caucasian man working with laptop for business. Businessman marketer working at the computer in the office, programmer, business analyst, designer, manager