Aged male teacher in front of chalkboard

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Photo credit: © Zoonar/Elnur Amikishiyev / Alamy / Afripics
License: Royalty Free
Model Released: Yes

Keywords: aged, blackboard, books, chalk, class, college, computer, discussing, educational, elementary, explaining, front, high, knowledge, learn, lecture, lecturer, male, man, mature, presentation, presenting, research, school, science, scientific, senior, showing, study, studying, teacher, teaching, test, textbook, tutor, university