TY JOUR TI PSYCHOLOGICAL AND PEDAGOGICAL CONCEPTS OF SOLVING SOME GEOMETRIC PROBLEMS KW TIMSS and PISA KW development KW perception KW mathematical abilities of students KW content KW geometric problems KW technology KW characteristics of “geometric vision” KW spatial representation abilities and the role of intrinsic motivation of students KW a prototype of a stereometric problem from profile mathematics. JO Profession-Oriented School AU Visitaeva, M.B. PY 2026 IS 14 PB INFRA-M Academic Publishing LLC.