Ключевые слова: adolescent, blur, boy, boyhood, caucasian, chalkboard, cheerful, children, classmates, classroom, education, emotion, erase board, eyeglasses, gesture, girlhood, girls, happy, indoors, job, lesson, man, marker, mature, middle aged, people, point with hand, positive, profession, pupils, school, schoolboy, schoolchildren, schoolgirls, schoolkids, smiling, teacher, teen, teenagers, together, workplace,