Diana RF, Kusuma PSB. Development of PBL Integrated Ethnomathematics Learning Tools to Develop Mathematical Problem-Solving Skills in Elementary School. J. Prisma. Sains [Internet]. 2025 Jun. 9 [cited 2025 Aug. 16];13(3). Available from: https://e-journal3.undikma.ac.id/index.php/prismasains/article/view/15868