Ключевые слова: 1213 years, 1314 years, 1516 years, 1617 years, american, assistance, boy, caucasian, class, classmate, classroom, computer, desk, education, electronic, elementary school, european, female, french, friend, german, girl, guidance, helping, high school, indoor, kid, knowledge, learning, lesson, male, monitor, person, pupil, school, schoolgirl, student, studying, teaching, technology, teen, teenager, tutor, young, youth,