Ключевые слова: antique, background, banner, black, blackboard, blank, board, chalk, chalkboard, classroom, colored, colorful, communication, concept, copy, copyspace, dark, design, dirty, drawing, education, effect, empty, film, frame, grain, grunge, isolated, learn, learning, lesson, message, old, retro, school, space, student, surface, teacher, text, texture, textured, used, vintage, wall, white, wood, wooden, write,