Ключевые слова: 1216, activity, afroamerican, american, boy, casual, caucasian, children, class, classroom, communication, confident, contact, different, education, elementary, enthusiastic, ethnicity, explaining, few, friends, fun, gesture, girl, group, happy, indoor, joy, kids, knowledge, lesson, listening, math, multiethnic, networking, notes, people, pupil, reply, school, smiling, social, students, studying, taking, teenage, together, trainee, youth,