Ключевые слова: 2012, arm, black, blackboard, blank, board, chalk, chalkboard, class, close, communication, concept, copy, copyspace, drawing, education, empty, female, finger, hand, handwriting, holding, human, learning, lesson, message, new year, note, number, old, people, person, primary, school, space, student, symbol, teacher, teaching, text, texture, up, white, work, write, writing,