Ключевые слова: answering, arm, attention, caucasian, child, childhood, children, class, classmates, classroom, close up, curiosity, development, education, elementary, elementary school, fingers, girl, hand, interest, kids, knowledge, learn, learning, lesson, little, person, preteens, primary, primary school, pupil, pupil hands, pupils, question, raised, raising hands, school, school kids, schoolchild, schoolgirl, sitting, smiling, student, students, study, volunteering, wisdom, youth,