00663naa#a2200181#i#4500001002200000005001700022011001400039100004100053102000700094200010500101210005100206215001000257608002700267675010800294700003500402700002900437856001500466EN\INFRA-M\bibl\4227120240425112514.4##a1998-0728##a20210217b2021####ek#y0engy0150####ca##aRU1#aResearch Activities As a Mean of Intellectual Development of Primary SchoolchildreneJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2021##a8 с.##aJournal article2local##aОбразование. Воспитание. Обучение. Организация досуга. 37#1aVinogradovagNatalya Fedorovna#1aRydzegOxana Anatol'evna4#anaukaru.ru