Ключевые слова: answer, arm, attention, back, back view, boy, child, children, class, classroom, communication, conversation, development, education, elementary school, engagement, growth, hand, hands, hands raised, help, helping, information, interaction, kid, kids, learn, learning, lesson, listening, little, person, project, question, raised, reading, room, school, student, students, study, studying, talk, talking, teacher, teaching, test, woman, young, youth,