THE EFFECT OF PROBLEM-BASED LEARNING MODEL IN IMPROVING MATHEMATICS LEARNING OUTCOMES OF GRADE V STUDENTS AT JAYAGIRI ELEMENTARY SCHOOL. Jurnal Ilmu Pendidikan Dasar [Internet]. 2024Jun.30 [cited 2026Feb.4];1(1):46-5. Available from: https://www.journal.unucirebon.ac.id/index.php/jipda/article/view/1487