Professor mit glücklichem Gesicht, der eine Idee hat. Lehrer und Schulmaterial im Klassenzimmer. Mann mit Bart auf weißem Backsteinhintergrund. Bildungs- und Wissenskonzept. - Stockfoto & -bild

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

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

Portrait of male teacher from preschool or elementary school in class. Teacher having idea. Amazed teacher waiting for students, smiling confidently. Positive expression emotions funny face

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

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.

Schoolgirl and tutor with happy faces hold open book, globe and microscope. Home education concept. Kid and man by desk with school supplies. Girl and teacher in classroom on white brick background

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.

Girl and father in classroom on white brick background. Back to school and home schooling concept. Schoolgirl and her dad with bored and serious faces. Kid and man by desk with book and school items

Schoolgirl and tutor with happy faces hold open book, globe and microscope. Home education concept. Kid and man by desk with school supplies. Girl and teacher in classroom on white brick background

Classroom and home education concept. Family by desk with school supplies. Schoolgirl and dad with thoughtful faces hold marker, ruler and book. Girl and father in classroom on white brick background

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

Teacher and school supplies in classroom. Professor with interested and smiling face stands by desk. Classic education and knowledge concept. Man with beard on white brick wall background

Man teacher with bearded thoughtful face in suit jeans black academic squared hat sitting with pencil in hand near school stationery blackboard alphabet colored pencils isolated on white background

Family stands by desk with school supplies. Classroom and home education concept. Girl and man in classroom on grey brick background. Schoolgirl with face covered and father with happy face hold toys

Handsome businessman man male scientist hipster got idea with light bulb in hand in office with board for copy space on white background