Ключевые слова: 1213 years, 1415 years, 1617 years, academic, adolescence, attentive, back to school, boy, boys, browsing, casual clothing, caucasian, caucasian ethnicity, child, chinese, chinese ethnicity, classmate, communication, computer, connection, development, digital tablet, education, female, five people, focused, friend, friendship, girl, girls, high school, holding, information, intelligence, intelligent, internet, knowledge, laptop, learn, learning, leisure, library, lifestyle, male, mixedrace, mixedrace person, modern, notebook, school, schoolboy, schoolgirl, secondary, sitting, student, study, studying, tablet computer, tablet pc, teenage, teenage boys, teenage girls, teenager, touch screen, using, using laptop, web, wireless technology, wisdom, youth,