Plaikoil, Advent Krisna Setyawan, et al. “THE EFFECT OF 5E LEARNING CYCLE MODEL ON PROBLEM SOLVING ABILITY IN TERMS OF STUDENT NUMERICAL ABILITY”. International Conference on Fundamental and Applied Research (I-CFAR), Dec. 2019, https://jurnal.undhirabali.ac.id/index.php/icfar/article/view/942.