Penerapan Model Problem Based Learning (PBL) Dalam Peningkatan Pemahaman Wujud Zat dan Perubahannya (Studi Kasus Kelas IV MI Muhammadiyah Blangpidie). Validitas: Jurnal Pendidikan dan Pembelajaran, [S. l.], v. 1, n. 2, p. 213–222, 2025. Disponível em: https://journal.maysapublishing.com/index.php/Validitas/article/view/249. Acesso em: 11 dec. 2025.