Hardeli, Hardeli, Eka Yusmaita, Sri Mulyani, Bundani Sakinah Alora, and Purti permatasari. 2022. “Validation of Discovery Learning E-Module Based on Video Demonstration on Chemical Equilibrium for High School Student”. Jurnal Penelitian Pendidikan IPA 8 (2):718-26. https://doi.org/10.29303/jppipa.v8i2.1370.