Masfufah NA, Mala A, Arifin SFA. IMPLEMENTASI MODEL PEMBELAJARAN PROBLEM BASED INSTRUCTION (PBI) DALAM MENINGKATKAN KEMAMPUAN BERFIKIR KRITIS PEMBELAJARAN IPAS MI NAHDLATUL ULAMA NGINGAS WARU SIDOARJO . Elementary J. Inov. Pendidik. Dasar [Internet]. 2025Jul.29 [cited 2026Mar.29];5(3):472-80. Available from: https://www.jurnalp4i.com/index.php/elementary/article/view/6489