Ключевые слова: aged, aged elderly, caucasian, chalkboard, chalkboard copyspace, class, classroom, college, concept, copy space, copyspace, education, education school, educator, elderly, exam, expert, grandfather, grey hair, intelligent, knowledge, learn, learn lesson, learning, lecturer, lesson, man, mature adult, mentor, occupation, old senior, oldage, people, portrait, professor, retirement, school, scientist, seminar, senior, senior professor, study, studying, teach, teacher, teaching, thinking, tutor, tutor study, university,