IMPLEMENTASI MODEL PEMBELAJARAN PBI (PROBLEM BASED INSTRUCTION) BERBASIS KPS (KETERAMPILAN PROSES SAINS) TERHADAP KEMAMPUAN BERPIKIR KRITIS PESERTA DIDIK PADA MATERI LAJU REAKSI. JRE [Internet]. 2020 Sep. 29 [cited 2025 Dec. 8];7(2):78-8. Available from: https://e-journal.umc.ac.id/index.php/JRE/article/view/1360