THE EFFECTIVENESS OF USING AUDIO-VISUAL MEDIA BASED ON POLYA’S PROBLEM-SOLVING THEORY IN ELEMENTARY SCHOOL STUDENTS’ MATHEMATICS LEARNING (CASE STUDY AT THE UPTD SDN MAULAFA). J. Innov. Technol. Learn. Educ. 2026, 3 (1), 36-47. https://doi.org/10.37792/jitle.v3i1.1919.