Ключевые слова: abacus, academic, arithmetic, attentive, bench, calculation, casual clothing, childhood, classroom, closeup, concentration, count, desk, development, education, elementary, focused, holding, indoors, information, innocence, intelligence, intelligent, knowledge, learning, lifestyle, man, math, mathematics, one person, part of, school, school kid, schoolboy, sitting, solving, student, study, studying, wisdom,