Asda, Eka, Effendi Effendi, Abel Maaruf, Hamdhan Fathony, and Isra Hidayati. 2022. “The Validity of E-Learning Chemistry Learning in SMA / MA Project Based Learning on Hydrocarbons Using the Flipped Classroom Approach in Class XI Senior High School”. INTERNATIONAL JOURNAL OF HIGH INFORMATION, COMPUTERIZATION, ENGINEERING AND APPLIED SCIENCE (JHICE) 2 (01), 1-9. https://doi.org/10.24036/jhice/vol2-iss01/20.