Selbstbewusster männlicher Lehrer mittleren Alters, der mit verschränkten Armen vor einer leeren grünen Tafel steht und freundlich in die Kamera blickt - Stockfoto & -bild

Grinning bearded teacher in eyeglasses and brown sweater standing in front of green chalkboard with blank copy space

Grinning bearded teacher wearing eyeglasses and brown shirt in front of blank chalkboard looking away

Cheerful bearded teacher in eyeglasses and brown sweater writing on green chalkboard with blank copy space

Teacher old school generation. Senior intelligent man teacher at chalkboard. Experienced lecturer. Mature teacher enjoy teaching. Sharing knowledge. Earning certifications for particular programs.

Try this. what angle you look. geometric shapes. high school modern education. senior man teacher use ruler while drawing. tutor man in glasses draw with ruler on blackboard. back to school.

Confident middle-aged male teacher or professor standing in front of a blank chalk board with folded arms smiling

Senior teacher explain subject at blackboard. teacher of geography. classroom with map. back to school. education in modern school. bearded man show something. copy space.

Smiling bald man in glasses leaning on white table with copy space

Thoughtful man seated on sofa at home resting his chin on his hand staring intently ahead watching something in a profile view

Relaxing man leaning on the couch with book on the table

Portrait of a solitary middle-aged man thinking while leaning on a wall with folded arms indoors

Thoughtful bald businessman with beard in glasses, studio background with copy space

Close up of smiling middle aged man with receding hairline and mustache sitting on sofa

Pensive middle-aged man standing against grey background looking up, with copy-space

Portrait of a confident man looking at camera while sitting at desk in front of a folder with business files during work in the office