Ключевые слова: advertising, advice, background, black, blackboard, blank, board, business, caucasian, chalk, chalkboard, coach, coaching, copy, copy space, copyspace, course, drawing, education, elementary, empty, formation, grunge, hand, human, idea, learn, lesson, line, lines, old, presentation, primary, pupil, school, seminar, space, student, studies, study, teacher, texture, think, training, university, wall, woman, workshop, write, writing,