Ключевые слова: 30s, adult, attention, boys, busy, chairs, childhood, children, classmates, classroom, communication, copy space, day, desk, education, elementary school, full length, girls, helping, horizontal, indoors, interested, kids, kneeling, knowledge, learning, lesson, listening, medium group of people, millennial, multiethnic group, preteens, primary school, pupils, school, school kids, schoolboys, schoolchildren, schoolgirls, selective focus, sitting at table, smiling, table, teacher, teaching, window, woman, working together, writing, young adult,