00597naa#a2200193#i#450# EN\INFRA-M\bibl\15331 20240507170937.2 1998-1740 20170222b2017####ek#y0engy0150####ca RUS RU Interactive Tasks on Informatics for the Organization of Independent Work of Pupils of Elementary School Journal article Moscow INFRA-M Academic Publishing LLC. 2017 7 с. Journal article local Nikulenkov V. Babina Ol'ga Ivanovna Drozdova I. naukaru.ru