Ключевые слова: 2014, advertising, background, billboard, black, blackboard, blank, board, chalk, chalkboard, class, classroom, close, closeup, color, communication, concept, copy, copyspace, day, dirty, drawing, education, elementary, frame, hand, handwriting, information, learn, lesson, message, new, note, noticeboard, old, school, sign, space, symbol, teach, teacher, text, texture, university, white, wood, write, year,