Ключевые слова: back, beautiful, book, boy, caucasian, cheerful, child, childhood, class, classroom, cute, desk, education, elementary, expression, female, girl, grade, happy, joyful, junior, kid, knowledge, learn, learning, lesson, little, lovely, people, person, preschooler, pretty, primary, pupil, pupil school, school, schoolchildren, schoolgirl, schoolkid, sitting, small, smiling, student, study, studying, success, teacher video, white, young, youth,