Ключевые слова: adult, aged elderly, blackboard, caucasian, chalkboard, chalkboard copyspace, class, classroom, college, concept, copy space, copyspace, education, education school, educator, elderly, excited, expert, grandfather, handsome, intelligent, knowledge, learn, learning, lecturer, lesson, man, mature adult, mentor, occupation, old, old senior, oldage, portrait, professor, retirement, school, science, seminar, senior, studying, suit, surprised, teach, teacher, teacher class, teaching, tutor, tutor study, university,