MAHAJENG, Mayang Chris; HENDRATMOKO, Ahmad Fauzi. IMPLEMENTASI PROBLEM BASED LEARNING UNTUK MENINGKATKAN KETERAMPILAN BERPIKIR KRITIS PESERTA DIDIK. SECONDARY: Jurnal Inovasi Pendidikan Menengah , [S. l.], v. 6, n. 2, p. 599–607, 2026. DOI: 10.51878/secondary.v6i2.10004. Disponível em: https://jurnalp4i.com/index.php/secondary/article/view/10004. Acesso em: 22 apr. 2026.