Nurcahyati, S. A., Haji, S. dan Agustinsa, R. (2024) “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: Jurnal Pendidikan Matematika, 10(1), hlm. 126-141. doi: 10.33654/math.v10i1.2350.