Br Sijabat, Krisdayanti Elisabet, Novi Tari Simbolon, dan Wisnu Saputra Sembiring. “PENGARUH MODEL PROBLEM BASED LEARNING TERHADAP KEMAMPUAN BERPIKIR KRITIS MATEMATIKA MATERI PECAHAN KELAS V SD NEGERI 040443 KABANJAHE”. Jurnal Ilmiah Pendidikan Dasar (JIPDAS) 6, no. 3 (Agustus 14, 2026): 4274–4283. Diakses Oktober 1, 2026. https://jurnal.spada.ipts.ac.id/index.php/JIPDAS/article/view/4641.