Ключевые слова: 7 year old, 8 years old, 9 year old, afican american, casual clothing, caucasian, child, children, class, classroom, desk, education, eight years old, female, girl, group, happy, indoors, inside, junior education, junior school, learning, lesson, multiracial, people, person, primary education, primary school, pupil, school, schoolboy, schoolchildren, schoolgirl, sitting, smiling, student, study, studying, together, vertical, young,