Ключевые слова: african, african american, american, black, book, boy, caucasian, child, childhood, children, class, classroom, college, concept, disability, disabled, education, elementary, female, five people, girl, homework, kid, knowledge, language, learn, learning, lesson, little, male, man, mixedrace, people, preschool, primary, pupil, school, sign, sign language, student, study, studying, teacher, teacher teaching, teaching, unaltered, university, young, young adult, young male,