Safana M, Zuhdi M, ‘Ardhuha J. Development of learning devices based on discovery learning model on global warming topic to improve student learning motivation and outcome. J. Pijar.MIPA [Internet]. 2021 Sep. 4 [cited 2024 Apr. 25];16(4):492-7. Available from: https://jurnalfkip.unram.ac.id/index.php/JPM/article/view/2845