Ключевые слова: academic ability, application ability, arithmetic, asian, calculation, caucasian, child, desk, drill, education, effort, elementary school student, girl, half, hand, home, home study, homework, indoors, japanese, learn, lifestyle, notebook, one person, pencil, person, quarter, serious, stacking, study, study habit, test, test study, thinking ability, upper body, writing, writing utensil,