Ключевые слова: backpack, bag, boy, casual, child, children, classmate, day, education, elementary, first, friend, friendship, fun, girl, go, group, happy, kid, learning, lifestyle, little, modern, outdoor, outside, park, primary, pupil, rucksack, school, school children, schoolboy, schoolchildren, schoolgirl, schoolkid, september, smile, student, students walking, study, together, walk, young, youth,