Ключевые слова: academic, announcement, appreciation, art, artistic, background, blackboard, board, card, celebrate, celebration, chalk, chalkboard, child, childhood, children, class, classroom, clean, closeup, college, copy, day, design, draw, drawing, duster, education, elementary, eraser, event, festive, flat, font, green, greenboard, greeting, grunge, happy, holiday, international, kid, lay, learn, leisure, lesson, many, message, nobody, note, notice, object, phrase, pieces, positive, room, school, schoolchild, space, sponge, sticks, students, study, surface, teach, teacher, teachers, text, texture, top, view, white, world, writing,