Ключевые слова: 10s, american, child, children, class, classmate, classroom, cognition, copybook, desk, educating, educational, elementary, european, exercise, friendly, german, girl, homework, indoors, kid, knowledge, learn, learner, learning, lesson, lifestyle, modern, notebook, occupation, person, portrait, preteen, primary, pupil, russian, school, schoolchild, schoolgirl, schooling, schoolkid, sitting, smart, spelling, student, study, studying, youth,