Ключевые слова: background, book, brasilia, brazil, card, caucasian, celebration, children, classroom, college, color, concept, congratulations, day, design, education, educational, female, flag, girl, greeting, group, happy, holiday, international, knowledge, learn, learning, life, male, national, phrase, professional, professor, school, science, study, symbol, teacher, teachers, teachers day, teaching, university, woman, world, world teacher, young,