Yusupov K. METHODOLOGICAL FOUNDATIONS FOR DEVELOPING SUBJECT COMPETENCIES IN GRADES 5–6 STUDENTS BASED ON THE MATERIAL–REPRESENTATIONAL–SYMBOLIC (MRT) APPROACH. ICSSH [Internet]. 2026 Apr. 8 [cited 2026 Jul. 14];2(4):18-22. Available from: https://uniconflix.com/index.php/ICSH/article/view/4277