Ключевые слова: african, african american, american, back toschool, black, boy, caucasian, child, class, classroom, college, concept, desk, education, education concept, elementary, elementary school, female, four people, girl, hand, indoors, knowledge, laptop, learn, learning, lesson, male, mixedrace, people, pupil, raising, raising hand, school, school education, sitting, student, study, studying, teacher, teaching, university,