Ключевые слова: 67 years, abacus, academic, arithmetic, attentive, bench, calculation, casual clothing, caucasian, caucasian ethnicity, child, childhood, classroom, concentration, content, count, desk, development, education, elementary, female, focused, girl, girls, holding, indoors, information, innocence, intelligence, intelligent, knowledge, learning, lifestyle, looking at camera, mathematics, maths, one person, problems, school, school kid, schoolgirl, sitting, smiling, solving, student, study, studying, wisdom,