Yulfina Y, Firmansyah A. Implementation of the Problem-Based Learning Model to Improve Student Learning Outcomes in History Lessons for Grade XI . EDUJAVARE: International Journal of Educational Research [Internet]. 2026 Sep. 12 [cited 2026 Sep. 13];4(02):1801-12. Available from: https://edujavare.com/index.php/EDUJAVARE/article/view/1884