Ключевые слова: baby, back, background, blackboard, boy, chalk, chalkboard, child, children, clever, concept, copy, cute, day, desk, desks, education, elementary, father, grow, helping, idea, junior, kid, learn, lesson, little, man, people, play, preschool, primary, pupil, pupils, ready, school, science, son, space, student, study, studying, talented, teacher, teaches, teaching, teen, time, tutor, young,