Ключевые слова: 20s, 4 year old, 5 year old, caucasian, child, childhood, children, class, classroom, education, eight people, elementary school, enthusiastic, female, flashcard, group, happy, horizontal, indoors, kindergarten, learning, lesson, little boys, little girls, male, math, mathematics, maths, number, numeracy, preschool child, primary age child, primary school, pupil, reading, school child, sitting, smiling, teacher, teaching, together, twenties, uniform, woman, women,