Ключевые слова: background, blackboard, board, boy, chalk, chalkboard, child, class, classroom, clever, closeup, color, concept, cute, development, education, elementary, exercise, girl, green, growth, hand, intelligence, junior, kid, knowledge, learn, learning, lesson, letters, lifestyle, little, numbers, person, primary, pupil, school, schoolboy, schoolgirl, semester, smart, student, study, studying, task, teacher, texture, write, writing, written,