Ключевые слова: 1 september, academic, apple, back, background, black, blackboard school, board, bouquet, card, celebration, chalk, chalkboard, classroom, college, concept, congratulations, day, design, desk, education, elements, empty, equipment, flowers, greeting, knowledge, life, poster, school, september, space, student, study, teach, teacher, teachers, teachers day, teaching, university, wooden, world teachers day,