Ключевые слова: boy, boys, child, childcare, childhood, class, day, daycare, development, education, elementary, female, floor, friendship, fun, girls, group, growth, happiness, happy, indoors, kid, kids, kindergarten, learn, learning, lesson, listening, little, math, mathematics, number, numeracy, nursery, preschool, primary, pupil, question, reading, school, sitting, smiling, speaking, study, teaching, together, woman,