Derlina, Mihardi S, Siregar AM, Hakim S. The Effectiveness of Using Alternative E-Learning Using Case Method in Physics Learning in Dealing with Changes in Learning Modes During a Pandemic . ASSRJ [Internet]. 2023Jan.12 [cited 2024Nov.23];10(1):1-07. Available from: http://116.203.177.230/index.php/ASSRJ/article/view/13589