Closeup portrait senior strict teacher holding book and pen, looking very serious, unhappy and grumpy, isolated gray wall background. Human emotion fa

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Closeup portrait senior strict teacher holding book and pen, looking very serious, unhappy and grumpy, isolated gray wall background. Human emotion facial expressions. Education concept

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Size: 4764px × 3578px
Photo credit: © Ivan Chiosea / Alamy / Afripics
License: Royalty Free
Model Released: Yes

Keywords: 60s, adult, aged, annoyed, bad, blackboard, business, chalk, class, classroom, college, concerned, demanding, education, elderly, equations, exam, failure, glasses, grandpa, instructor, learn, lecture, male, man, master, mathematics, maths, mature, people, pissed, posing, principal, professor, reform, retirement, school, schoolteacher, skeptical, stern, students, study, teacher, teaching, test, university, work, wrong