PUTRI, Dinda Hepayana; SARAGIH, Sehatta; SYOFNI, Syofni. Development of Problem Based Learning Model Learning Tools to Facilitate the Mathematical Problem Solving Abilities of Grade VII Students at Junior High School. PRISMA, [S. l.], v. 13, n. 1, p. 60–69, 2024. DOI: 10.35194/jp.v13i1.3849. Disponível em: https://jurnal.unsur.ac.id/index.php/prisma/article/view/3849. Acesso em: 16 apr. 2026.