Puspitasari R, Faridah TN, Rustini T. The Importance Of Problem Based Learning Model In Improving Students’ Understanding Of Natural Appearances Material. Soc. Sci. J. [Internet]. 2024 Oct. 25 [cited 2026 May 12];1(1):15 – 18. Available from: https://jurnal.utami.id/index.php/SOC/article/view/90