Ключевые слова: academic, background, black, blackboard, board, chalk, class, college, colorful, communication, concept, course, education, educational, english, foreign, grey, hanging, international, knowledge, language, learn, learning, lesson, linguistic, object, pictures, polyglot, school, speak, student, study, studying, teach, teacher, teaching, time, translate, university, vocabulary, wall, wooden, word, written,