Old teacher in front of green board

---

Size: 5583px × 3727px
Photo credit: © Elnur Amikishiyev / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: academic, blackboard, board, book, books, chalkboard, class, classroom, college, demonstrating, discussing, education, elder, exam, explaining, graduation, green, high, learn, learning, lecture, lecturer, lesson, man, mature, mentor, mentoring, older, pointing, presenting, questioning, school, science, secondary, showing, strict, study, studying, teacher, teaching, textbook, textbooks, training, tutor, tutoring, university