Yurieva Shekerliyska-Vachkova H. CONDITIONS AND OPPORTUNITIES FOR INTEGRATION OF ELEMENTS OF CONSTRUCTIVIST APPROACH IN THE BULGARIAN MATHEMATICS CURRICULUM. kij [Internet]. 2025 Jun. 3 [cited 2026 Apr. 17];70(3):283-9. Available from: http://ojs.ikm.mk/index.php/kij/article/view/7572