Ключевые слова: back, background, blackboard, board, book, chalk, chalkboard, child, childhood, children, class, classroom, concept, degree, desk, diploma, drawing, educate, education, elementary, equipment, grade, group, happy, knowledge, learn, learning, lesson, library, notebook, page, pen, pencil, people, person, primary, school, student, study, studying, supplies, table, teacher, training, university, website, wisdom, write, young,