Ключевые слова: 67 years, 89 years, academic, bag, boy, boys, casual clothing, caucasian, caucasian ethnicity, child, childhood, classmate, classroom, communication, development, discussing, diverse, diversity, education, elementary, ethnically diverse, ethnicity, female, four people, friend, girl, girls, group, hallway, holding, indoors, information, innocence, intelligence, intelligent, knowledge, lifestyle, male, mixedrace, mixedrace person, multiethnic, school, school kid, schoolboy, schoolgirl, smiling, speaking, standing, student, talking, together, wisdom,