Ключевые слова: aligned, autumn, back, background, black, blackboard, blank, book, chalk, class, closeup, concept, copy, design, drawing, education, icon, information, institute, k, knowledge, learn, learning, library, literature, object, open, open book, out, page, paper, pencil, read, school, selective focus, sheet, sign, space, striped, student, study, table, teach, text, textbook, tree, wall, white, wisdom, yellow,