Викладач, який вказує на дошку в університеті, банер - Стокове фото та зображення

Professor, Chemist, Biologist, Male, is Holding the Class, Lesson in Auditorium in front of Students, professor in glasses, in white medical robe, professor with beard and mustache, Top Down, zoom in, Professor Closeup, gesticulating, holding

Professor, Chemist, Biologist, Teacher is Holding the Class,Having Speech, Slap His Palm on the Tribune, water tap, sink, professor in white medical robe, in glasses, daytime, green blackboard, indoor, light from the windows, door is behind the

Professor, Chemist, Biologist, Male, is is Walking by Dark Corridor to the Auditorium, Entered, Started to Hold the Class, Lesson in Auditorium in front of Students, professor in glasses, in white medical robe, gesticulating, professor with beard

Professor, Chemist, Biologist, Male, Have Closed the Door, Opened the Door, Entered the Classroom, Closeup, Began the Lesson, teacher is Holding the Class, Lesson in Auditorium in front of Students, professor in glasses, in white medical

Education and knowledge. geometric shapes at high school. senior man teacher use ruler while drawing. bearded tutor man draw with ruler on blackboard. back to school. school disciplines.

Professor, Man, Chemist, Biologist in White Medical Robe, professor in glasses, man with beard and mustache, is Holding the Class, Lesson at the Tribune, Teacher's Desk, man is gesticulating, took off the glasses, weared it, green blackboard on the

Cheerful senior man with beard and grey hair pointing with finger on purple, banner

Pleased middle aged man in wireless headphones listening music isolated on yellow, banner

Senior man with beard and grey hair pointing with finger at camera on purple, banner

Skeptical senior man moving eyebrow while looking at camera on purple background, banner