00528naa#a2200181#i#450# EN\INFRA-M\bibl\807 /en/manage/index 20250417155750.4 1998-0728 20131121b2013####ek#y0engy0150####ca RUS RU Practical work in mathematics as methodical innovation Journal article Moscow INFRA-M Academic Publishing LLC. 2013 4 с. Journal article local Smoleusova T. fht.editorum.ru /en/manage/index