Ключевые слова: academic, addition, attractive, blackboard, blank, book, calculation, caucasian, chalk, chalkboard, cheerful, classmates, classroom, college, desk, education, explain, facilitator, friendly, front, graduate, happy, high, holding, indoors, instructor, knowledge, learn, learning, looking, male, man, marker, one, people, portrait, post, pretty, profession, professional, school, smiling, standing, student, teacher, teaching, tutor, university, whiteboard, young,