Ключевые слова: 10 year old, 11 year old, 20s, african american, black, book, boy, caucasian, child, children, class, classroom, concentrating, desk, education, elementary, encouraging, female, file, five people, folder, girl, helping, horizontal, learning, looking at camera, male, occupation, portrait, professional, pupil, school, school children, sitting, student, studying, teacher, teaching, textbook, together, tutor, twenties, woman, women, working, writing,