TY CONF TI COGNITIVE DEVELOPMENT OF PRESCHOOLERS IN THE PROCESS OF RESEARCH ACTIVITIES IN THE CONTEXT OF THE IMPLEMENTATION OF THE GEF DO KW cognitive development KW research activities KW preschool education KW Federal State Educational Standard for Preschool Education (GEF DO) KW preschool children. JO III All-Russian Scientific and Practical Conference "Education-Science-Practice" AU Harichkina, Y.S. AU Hichina, D.V. AU Evtushenko, K.A. PY 2026 PB Autonomous Non-Profit Educational Organization of Higher Education "Kuban Institute of Vocational Education"