Ключевые слова: back, background, black, blackboard, board, boy, business, chalk, chalkboard, childhood, children, class, classroom, cognition, college, colours, communication, concept, creativity, cute, design, draw, educate, elementary, future, hand, kids, kindergarten, knowledge, learn, lesson, little, notebook, pen, pencil, people, play, preschool, pupil, school, student, studying, table, teach, teacher, text, university, wooden, word, write,