Ключевые слова: abstract, beginnings, business, chalkboard, class, classroom, colour, concept, conservation, creative, creativity, day, design, development, document, ecology, educated, education, educational, environment, environmental, graphic, green, growth, icon, idea, intelligence, international, knowledge, leaf, learning, life, literacy, literature, nature, planting, read, school, seedling, students, study, studying, sustainable, symbol, teachers, textbook, university, white, wisdom, world,