Ключевые слова: abstract, appreciate, appreciation, blur, blurred, board, chair, child, class, classroom, college, contemporary, copy, copyspace, defocus, design, desk, education, elementary, exam, furniture, hall, high, indoors, inside, interior, kid, learn, lecture, library, modern, nobody, primary, room, school, seat, student, study, table, teacher, team, training, university, visualization, wall, white, whiteboard, works, young, youth,