Ключевые слова: boy, child, class, classmate, classroom, education, girl, group, high, hispanic, holding, hologram, indoors, kid, knowledge, latin, learn, learner, learning, lesson, looking, man, many, middle age, paper, people, person, projection, public, pupil, school, schoolboy, schoolgirl, screen, showing, statistics, student, study, studying, teacher, teaching, technology, teen, teenage, teenager, test, tutor, tutoring, young,