Ключевые слова: 2023, anniversary, art, background, billboard, black, blackboard, board, calendar, celebrate, chalk, chalkboard, christmas, class, classroom, communication, concept, design, dirty, draw, drawing, empty, font, frame, future, hand, handwriting, handwritten, happy, holiday, idea, information, inscription, isolated, mathematics, message, new, number, school, sign, space, student, symbol, text, texture, wall, white, wooden, word, year,