Ключевые слова: aged, ancient, antique, black, blackboard, blank, board, chalk, chalkboard, class, classroom, color photography, copy, drawing, education, empty, frame, green, grunge, historical, horizontal, isolated, kid, learn, lesson, letter, message, object, obsolete, old, pupil, retro, school, slate, small, space, student, studio shot, study, studying, teach, teacher, texture, university, vintage, white, wood, wooden, work, worn, write, writing,