Pratini, Arinda, Maimunah Maimunah, and Syarifah Siregar. “Efforts to Improve Mathematics Learning Outcomes through The Implementation of PBL Model on SPLDV Material”. Journal of Education and Learning Mathematics Research (JELMaR) 2, no. 1 (May 28, 2021): 43-50. Accessed December 20, 2025. https://jelmar.wisnuwardhana.ac.id/index.php/jelmar/article/view/41.