Ключевые слова: active, book, boy, care free, casual, caucasian, cheerful, child, childhood, classmate, communication, corridor, day, diversity, education, elementary, enjoyment, excitement, female, freedom, friendship, fun, girl, group, hallway, happy, indoor, motion, people, playful, preschool, preteen, primary, pupil, recess, running, school, schoolboy, schoolchildren, schoolgirl, schoolkid, times, together, university student,