SARAGIH, R. W.; ELFRIANTO, E. The application of a problem-based learning (PBL) model to improve writing skills in elementary school children. Jurnal Riset Ilmu Pendidikan, [S. l.], v. 6, n. 2, p. 45–48, 2026. DOI: 10.56495/jrip.v6i2.1694. Disponível em: https://jurnal.larisma.or.id/index.php/JRIP/article/view/1694. Acesso em: 10 nov. 2026.