Ключевые слова: book, child, childhood, computer, concentration, concept, day, displair, e learning, education, elearning, elementary, elementary age, epidemic, examining, exhasted, expression, eyeglasses, girl, head, holding, home interior, homework, illness prevention, indoors, infectious disease, internet, kid, knowledge, laptop, learning, lifestyle, lifestyles, little, online learning, paper, pen, primary, sad, school, stress, student, study, studying, table, technology, tired, writing,