Ключевые слова: answering, attention, boy, career, caucasian, child, childhood, class, classmates, classroom, communication, development, education, elementary school, explaining, female, five people, girl, indoors, information, interacting, job, knowledge, learn, learning, lesson, listening, male, mid adult, occupation, people, primary school, profession, pupil, question, raising hands, real people, school, sitting, student, study, studying, teacher, teaching, together, undefined, woman, working,