“ANALYSIS OF STUDENTS’ MATHEMATICAL PROBLEM SOLVING ABILITIES BASED ON POLYA’S STAGES IN MATHEMATICS LEARNING IN GRADE IV AT SD 25 BANDA ACEH”. PIONIR: JURNAL PENDIDIKAN, vol. 15, no. 1, Apr. 2026, pp. 198-11, https://doi.org/10.22373/pjp.v15i1.34475.