TY JOUR TI Designing an educational environment for children under three years of age based on the principles of the Federal Standard KW educational environment KW designing of an educational environment KW developing a subject-spatial environment KW preschool educational organization KW children under three years of age JO Journal of Pedagogical Studies AU Teplova, A.B. PY 2019 IS 4 PB INFRA-M Academic Publishing LLC.