Apriwanda, W., Lubis, A., Meirani, D.L., Karolina, E. and Ayuningdyah, Y. 2021. Development Content Learning System (CLS) Material Inter-Molecular Force Based on Project Base Learning (PjBL) with Flipped Classrooms in Senior High School. INTERNATIONAL JOURNAL OF HIGH INFORMATION, COMPUTERIZATION, ENGINEERING AND APPLIED SCIENCE (JHICE). 1, 01 (Jun. 2021), 1-11. DOI:https://doi.org/10.24036/jhice/vol1-iss01/34.