Ключевые слова: 1418, absorbed, activity, adolescents, african, apps, assistance, black, blackboard, boys, break, caucasian, class, classmates, college, desks, enjoying, european, females, friends, games, girls, group, help, indoors, information, interest, internet, lesson, males, multiethnic, obsessed, pastime, playing, pupils, recess, school, search, smartphones, students, surfing, teenagers, time, university, using, white, young, youth,