Ключевые слова: african, african american, american, back toschool, black, boy, child, class, classroom, college, concept, conversation, discussion, education, education concept, elementary, elementary school, female, girl, hand, hand sign, knowledge, language, learn, learning, lesson, male, meeting, mid adult, mixedrace, people, pupil, school, school education, sign, sign language, student, study, studying, talking, teacher, teaching, three people, tutor, university, woman,