KEEFEKTIFAN MODEL PROBLEM BASED LEARNING DALAM MENINGKATKAN HASIL BELAJAR MATEMATIKA KELAS V SDIT AZ-ZAHRA DEMAK. Tunjuk Ajar : Jurnal Penelitian Ilmu Pendidikan, [S. l.], v. 1, n. 2, p. 88–94, 2018. DOI: 10.33578/. Disponível em: https://jta.ejournal.unri.ac.id/index.php/JTA/article/view/87. Acesso em: 8 nov. 2025.