Ключевые слова: blackboard, child, childhood, class, classroom, development, earth, education, electronic, elementary, flags, generation, geography, global, globe, happy, home, homework, journey, knowledge, learn, learning, map, national, observation, observing, plan, planet, preschool, pupil, reading, recreation, school, schoolboy, schoolgirl, shot, sphere, student, studio, study, studying, table, teaching, together, world,