Ключевые слова: adolescent, asian, blur, book, boyhood, boys, caucasian, cellphone, cheerful, children, classmates, classroom, devices, education, emotion, eyeglasses, gadgets, gesture, girl, girlhood, indoors, interracial, laptops, lesson, man, mature, middle aged, multiethnic, notebooks, people, point with finger, profession, pupils, school, schoolboys, schoolchildren, schoolgirl, schoolkids, smartphone, smiling, speak, talk, teacher, technology, teen, teenagers, together, workplace,