Ключевые слова: adult, board, book, cartoon, caucasian, chalkboard, character, child, children, class, classroom, college, concept, desk, education, elementary, female, flat, girl, happiness, happy, illustration, job, knowledge, learn, learning, lecture, lesson, male, man, people, person, professor, pupil, school, science, sitting, student, study, studying, teach, teacher, teaching, technology, teenager, tutor, university, woman, young,