Ключевые слова: back to school, boy, care, caucasian, chemistry, child, class, classroom, contagion, contagious, corona, coronavirus, covid 19, covid19, development, education, elementary school, face mask, female, girl, health, health hazard, infection, learning, male, mixedrace, pandemic, people, primary school, probe, protection, real people, safety, school, science, social distancing, three people, virus, wearing,