Ключевые слова: adult, african, business, caucasian, classroom, communication, computer, computing, course, data, desk, desktop, distant, document, education, ethnicity, explaining, guy, hand, indoor, job, keypad, lesson, man, monitor, occupation, office, online, overview, paper, paperwork, pen, people, person, pointing, profession, remote, screen, showing, student, study, teacher, teaching, technology, video, woman, working, workplace, young,