Ключевые слова: 20s, 2529 years, 67 years, 89 years, active, african ethnicity, athletic, basketball, basketball court, basketball hoop, black, blur, boy, boys, caucasian, caucasian ethnicity, child, classmate, closeup, coach, communication, competition, connection, digital tablet, female, floor, game, girl, girls, global communication, hall, holding, indoors, male, medium group of people, mid section, mixedrace, mixedrace person, play, playground, playtime, recreation, school, school kid, schoolboy, schoolgirl, sports, standing, student, tablet computer, tablet pc, touchscreen, trainer, wireless technology, woman, young adult, young women,