00665naa#a2200181#i#450# EN\INFRA-M\bibl\37233 20241227101122.5 2500-3305 20200420b2020####ek#y0engy0150####ca RU Formation of schoolchildren competencies through competency-oriented math problems Journal article Moscow INFRA-M Academic Publishing LLC. 2020 6 с. Journal article local Образование. Воспитание. Обучение. Организация досуга. 37 Keldibekova Aida Oskonovna Sopuev Ulanbek Adahimzhanovich zh-szf.ru