00787naa#a2200181#i#4500001002200000003001700022005001700039011001400056100004100070102000700111200013900118210005100257215001000308608002700318675019200345700002900537856003900566EN\INFRA-M\bibl\67236/en/manage/index20250716204313.3##a1998-0728##a20230626b2023####ek#y0engy0150####ca##aRU1#aSecond Grader and Mathematics: Mastering the Subject Within the Framework of the Requirements of the Current StandardeJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2023##a6 с.##aJournal article2local##aПервая ступень обучения. Начальная школа. 373.3aСодержание воспитания и обучения. 37.011.33aматематики. 372.851#1aRydzegOxana Anatol'evna4#atest.editorum.ruu/en/manage/index