Ключевые слова: back, background, blackboard, book, boy, caucasian, cheerful, child, childhood, class, classroom, concept, cute, day, development, drawing, education, educational, elementary, fun, girl, group, happy, homework, kid, knowledge, learn, learning, lesson, lifestyle, little, pencil, people, person, portrait, preschool, preschooler, primary, pupil, school, schoolboy, small, smile, smiling, student, study, studying, together, white, youth,