Suyanta S. USING THE PROBLEM BASE LEARNING (PBL) LEARNING MODEL TO IMPROVE CRITICAL THINKING ABILITY IN CHEMICAL LEARNING ABOUT TERMOCYMIA FOR STUDENTS IN CLASS XI MIPA 3 SMAN 1 BAMBANGLIPURO BANTUL. ideguru [Internet]. 2020May11 [cited 2024Apr.25];5(1):109-14. Available from: https://jurnal-dikpora.jogjaprov.go.id/index.php/jurnalideguru/article/view/119