Ключевые слова: 1215, 5059, aframerican, afroamerican, assistance, blackboard, caucasian, class, classroom, community, concentration, desk, education, english, exam, exercises, expertise, females, girls, group, happiness, intelligence, learning, listening, math, mathematician, men, multiethnic, positive, presentation, professor, rear, russian, school, schoolgirl, senior, showing, student, studying, table, talking, teacher, teaching, teenagers, togetherness, training, university, young,