Ключевые слова: academic, adult, boy, caucasian, cheerful, child, class, classroom, college, computer, confident, desk, development, digital, education, female, front, girl, happy, indoors, job, knowledge, lady, learning, lesson, looking, occupation, pc, person, portrait, profession, pupil, school, schoolchild, smile, smiling, standing, student, tablet, teacher, teachers day, teaching, technology, teen, teenager, touchscreen, tutor, woman, work, young,