PENGARUH LKPD BERBASIS PROBLEM BASED LEARNING BERMUATAN BUDAYA BATAK TERHADAP KEMAMPUAN BERPIKIR KRITIS MATEMATIS SISWA DI SMAN 1 AIR PUTIH. JOURNAL OF SCIENCE AND SOCIAL RESEARCH, [S. l.], v. 9, n. 3, p. 3140–3146, 2026. DOI: 10.54314/jssr.v9i3.6378. Disponível em: https://jurnal.goretanpena.com/index.php/JSSR/article/view/6378.. Acesso em: 7 jun. 2026.