University professor teaching in class standing with a book and marker in hand. Senior man reading a book with concentration standing in classroom.

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Size: 7388px × 4925px
Photo credit: © Jacob Lund / Alamy / Afripics
License: Royalty Free
Model Released: Yes

Keywords: book, bookshelf, class, classroom, close, concentration, education, elderly, hand, indoors, instructor, lecture, lecturer, library, lifestyle, male, man, marker, pen, people, person, portrait, presentation, professor, reading, room, seminar, senior, standing, teacher, teaching, text, training, university, whiteboard, writing