Perevozchikova A.V., Vasiliev V.G. Learning Tasks Setting in the System of DevelopingTraining of D.B. Elkonin and V.V. Davydov under Introducing New Educational Standards in Primary Schools Psychological-Educational Studies (2015. Vol. 7, no. 1, pp. 69–79) DOI 10.17759/psyedu.2015070107 4229