Ключевые слова: 20s, adult, african american ethnicity, attention, black, boy, caucasian, childhood, children, chinese asian ethnicity, classmates, classroom, communication, copy space, day, drawing, education, girls, giving, holding pencil, horizontal, incidental people, indoors, infant school, kids, kindergarten, learning, lesson, looking at each other, low angle, millennial, mixed race person, multiethnic group, nursery school, pupils, school kids, schoolboy, schoolchildren, schoolgirls, selective focus, side view, sitting at table, smiling, teacher, teaching, three people, waist up, woman, working, young adult,