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]. 2023 Jan. 12 [cited 2026 May 28];10(1):1-07. Available from: https://scholarpublishing.org/journals/index.php/ASSRJ/article/view/5517