Ключевые слова: academic, aged, aged elderly, blackboard, caucasian, chalkboard copyspace, class, classroom, closeup, concept, copyspace, education, education school, educator, elderly, empty, exam, expert, grey hair, handsome, indoor, intelligent, knowledge, learn, learn lesson, learning, lecture, lecturer, man, mature adult, near, occupation, old senior, oldage, portrait, professor, school, science, senior, study, studying, suit, teach, teacher, teacher class, teaching, traditional, tutor, tutor study, university,