Ключевые слова: 12 years old, african, atom, black, boy, building, caribbean, caucasian, class, classroom, collaborating, confident, education, female, girl, group, happy, high school, hispanic, horizontal, indian, learning, lesson, male, mixed race, model, molecule, multicultural, people, person, positive, pupil, school, science, secondary school, sitting, smiling, south american, student, study room, studying, table, together, working,