Ключевые слова: academic, back, background, blackboard, blackboards, board, book, bright, chair, chalk, chalkboard, class, classroom, college, concept, copy space, desk, desks, educate, education, elementary, empty, furniture, green, group, homework, inside, interior, knowledge, learn, lecture, lesson, nobody, object, room, school, schoolroom, seat, seminar, stack, student, study, table, teach, teacher, training, university, wall, wood, wooden,