Ключевые слова: african, african american, american, brazilian, caucasian, cheerful, class, classroom, college, education, female, girls, group, high school, hispanic, immigrant, instruction, international, latin, laughing, learning, lecturer, lesson, male, men, mixed, multi ethnic, multicultural, people, person, portrait, professor, project, school, smiling, students, studying, talking, teacher, team, teamwork, teenager, teens, together, tutor, university, women, working, young, young adults,