Ключевые слова: adolescence, asian, beautiful, blackboard, blank, board, brain, business, care, chalk, children, classroom, college, course, day, education, educational, elementary, fun, genius, girl, happy, having, health, healthy, idea, intelligent, international, kid, knowledge, learn, literacy, love, maths, playing, primary, school, smart, smile, student, success, sustainability, sustainable, teacher, teaching, thai, think, wisdom, world, writing,