Nurcahyati SA, Haji S, Agustinsa R. Developing student worksheets based on project-based learning to improve understanding of mathematical concepts for students at grade VIII of state junior high school 6 Seluma. Math Didactic [Internet]. 8 Mei 2024 [dikutip 4 Agustus 2025];10(1):126-41. Tersedia pada: https://jurnal.stkipbjm.ac.id/index.php/math/article/view/2350