Anjelia, Sela. “The Effect of Giving Practice Questions With Completion Guidance in Direct Learning Against Improvement in the Understanding of the Concept of Fixed Comparison Laws in Class X Students of SMA Negeri 4 Palangka Raya Academic Year 2018/2019”. Jurnal Ilmiah Kanderang Tingang 11, no. 2 (December 31, 2020): 307-314. Accessed February 24, 2024. https://chem-upr.education/ojs/index.php/JIKT/article/view/94.