KARYONO; APRIAN SUBHANANTO. KEEFEKTIFAN PROBLEM BASED LEARNING UNTUK MENINGKATKAN KEMAMPUAN KRITIS MATEMATIK SISWA SEKOLAH DASAR. Jurnal Tunas Bangsa , [S. l.], v. 2, n. 1, p. 72–84, 2015. Disponível em: https://ejournal.bbg.ac.id/index.php/tunasbangsa/article/view/604. Acesso em: 3 aug. 2026.