Hasyim F, Prastowo T, Jatmiko B. The Use of Android-Based PhET Simulation as an Effort to Improve Students’ Critical Thinking Skills during the Covid-19 Pandemic. Int. J. Interact. Mob. Technol. [Internet]. 2020 Nov. 24 [cited 2024 Nov. 21];14(19):pp. 31-41. Available from: https://online-journals.org/index.php/i-jim/article/view/15701