Ключевые слова: activity, answer, arm, casual, caucasian, cheerful, child, childhood, children, class, classroom, communication, desk, different, editorial, education, elementary, ethnicity, female, girl, group, hand, happy, indoor, junior, kid, knowledge, learn, learning, lesson, many, people, pupil, raised, raising, school, schoolchild, schoolgirl, sitting, smiling, student, study, studying, together, up, young,