00583naa#a2200193#i#4500001002200000005001700022011001400039100004100053101000800094102000700102200009000109210005100199215001000250608002700260675003400287700002100321700003200342856001500374EN\INFRA-M\bibl\2458720240507144430.2##a2308-4898##a20181225b2018####ek#y0engy0150####ca0#aRUS##aRU1#aCompetence Approach in Teaching the Topic "Tangent Plane and Normal"eJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2018##a7 с.##aJournal article2local##aМатематика. 51zRUS#1aDmitrievagI. M.#1aIvanovgGennadiy Sergeevich4#anaukaru.ru