Hadi, Atikah Rahmatil, Yullys Helsa, Dina Amsari, and Fardatil Aini Agusti. 2026. “Improvement of Student Learning Outcomes in Flat Shapes Material With the Problem-Based Learning Model”. Journal of Practice Learning and Educational Development 6 (3). https://doi.org/10.58737/jpled.v6i3.1321.