Ключевые слова: asphalt, back, back to school, background, backpack, bag, carry, children, concept, education, educational, elementary school, face mask, grey, high school, infection, isolated, kid, knapsack, knowledge, mask, medical mask, new normal, new reality, new school year, no people, nobody, object, outdoors, outside, pandemic, protection, protective, rucksack, safety, school, school building, school yard, schoolyard, september, student, students, study, virus, yard,