00680naa#a2200169#i#4500001002200000005001700022011001400039100004100053102000700094200013900101210005100240215001000291608002700301675013900328700002900467856001400496EN\INFRA-M\bibl\9529520260518140515.1##a1998-0728##a20250220b2025####ek#y0engy0150####ca##aRU1#aFourth-Grader and Mathematics: Mastering the Subject Within the Framework of the Requirements of the Current StandardeJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2025##a4 с.##aJournal article2local##aПервая ступень обучения. Начальная школа. 373.3aРазвивающее обучение. 371.315.5#1aRydzegOxana Anatol'evna4#azh-szf.ru