00739naa#a2200181#i#450# EN\\bibl\44045 /en/manage/index 20250521212407.3 2686-9896 20220110b2022####ek#y0engy0150####ca RU EDUCATIONAL ACTIVITIES OF PRIMARY SCHOOL'S STUDENTS Journal article Angarsk Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University» 2022 1 с. Journal article local Математическое моделирование в общественных и гуманитарных науках. 00.77 grnti Grin Nadezhda Vasil'evna fht.editorum.ru /en/manage/index