Ключевые слова: algebra, back, background, caucasian, child, childhood, children, computer, cute, development, device, doing, education, elearning, elementary, exercise, girl, growth, home, homework, indoors, internet, kid, knowledge, laptop, learn, learning, lessons, lifestyle, little, math, notebook, online, people, person, pupil, school, schoolgirl, screen, sitting, studying, subject, table, task, teacher, technology, textbook, view,