salwi, saiful, Abdul Wahid, and Jusmaniar N. “Effectiveness Of Problem Solving Based Learning Model In The 21st Century In Improving Creativity and Science Learning Outcomes Of Grade IV Students”. ALENA : Journal of Elementary Education 3, no. 2 (July 6, 2025): 245–256. Accessed April 17, 2026. https://jurnal-fkip-uim.ac.id/index.php/alena/article/view/414.