Ключевые слова: 20s, 7 years old, 8 years old, african american, black, boy, caucasian, child, children, class, classroom, connected, digital tablet, education, elementary, female, floor, front view, girl, group, horizontal, independent school, learning, listening, male, man, men, multicultural, occupation, online, people, person, primary, private school, public school, pupils, school, sitting, smiling, students, tablet computer, teacher, teaching, technology, together, touchscreen, twenties, uniform,