Ключевые слова: abc, abstract, art, background, black, blackboard, blank, board, chalk, chalkboard, childhood, class, classroom, concept, copy, design, dirty, drawing, education, empty, flat, font, frame, handwritten, isolated, kid, learn, lesson, letterpress, nobody, object, pattern, pile, school, sign, space, study, surface, teach, teacher, template, text, texture, typeset, university, white, wood, wooden, words, write,