Ключевые слова: answer, arithmetic, book, business, challenge, child, childhood, children, colorful, count, education, educational, exam, examination, fun, gap, graduation, hat, kid, kindergarten, language, learn, learning, lesson, letter, magnet, math, mathematic, number, numeracy, pencil, play, plaything, preschool, read, school, sheet, student, study, symbol, teach, toy, university, word, world,