Ключевые слова: 20s, adult, attention, back view, childhood, children, classmates, classroom, communication, copy space, day, education, front view, group learning, horizontal, indoors, infant school, interested, kids, kindergarten, learning, lesson, medium group of people, millennial, multiethnic group, nursery school, pencils, pens, pupils, reaching, school, school kids, schoolboys, schoolchildren, schoolgirls, schooluniform, selective focus, sitting at table, smiling, sunlight, teacher, teaching, waist up, window, woman, working, young adult,