00669naa#a2200181#i#450# EN\INFRA-M\bibl\15764 20250116085828.4 1998-0728 20170331b2017####ek#y0engy0150####ca RUS RU Course «Math Around Us»: Development of Independent Behavior of Younger Schoolchild by Means of School Subject Journal article Moscow INFRA-M Academic Publishing LLC. 2017 7 с. Journal article local Образование. Воспитание. Обучение. Организация досуга. 37 RUS Rydze Oxana Anatol'evna zh-szf.ru