Ключевые слова: back to class, back to school, boy, child, childhood, class, coronavirus, covid 19, design, disease, distancing, education, epidemic, face, flu, fun, happy, health, illustration, joy, kid, kindergarten, knowledge, learn, lesson, lifestyle, male, mask, medical, new normal, person, preschool, prevent, protect, quarantine, safe, school, school corridor, social, social distancing, student, summer, training, virus, welcome,