CHIKMAH, C. PENGGUNAAN MODEL PROBLEM BASED LEARNING UNTUK MENINGKATKAN HASIL BELAJAR IPS MATERI LETAK DAN LUAS INDONESIA. SOCIAL : Jurnal Inovasi Pendidikan IPS, [S. l.], v. 2, n. 1, p. 1-11, 2022. DOI: 10.51878/social.v2i1.978. Disponível em: https://jurnalp4i.com/index.php/social/article/view/978. Acesso em: 8 jan. 2025.