00499naa#a2200169#i#450# EN\INFRA-M\bibl\1018 20260128193943.3 1998-0728 20131225b2013####ek#y0engy0150####ca RUS RU Developing General-Purpose Educational Skills While Teaching Mathematics Journal article Moscow INFRA-M Academic Publishing LLC. 2013 6 с. Journal article local Visitaeva Maret B. zh-szf.ru