TY JOUR TI METHODOLOGICAL SUBSTANTIATION OF AN INDIVIDUAL EDUCATIONAL TRAJECTORY OF THE DEVELOPMENT OF SCHOOLCHILDREN'S MOTOR ABILITIES, BUILT ON THE BASIS OF THE PHENOMENON OF AN INDIVIDUAL BIOLOGICAL YEAR KW motor abilities KW schoolchildren KW individual educational trajectory KW physical culture KW development KW motor abilities KW biology KW organism KW phenomenon KW age JO Scientific notes of P. F. Lesgaft University AU , .. AU , .. PY 2023 IS 0 PB National State University of Physical Education, Sports and Health named after P.F. Lesgaft