Rastinah , Rastinah, Elya Rosalina, and Sari Pertiwi. “Development of Student Worksheets (LKPD) Based on Problem Based Learning (PBL) in Mathematics Learning for Grade IV Students of Elementary School ”. EDUJAVARE: International Journal of Educational Research 4, no. 02 (July 21, 2026): 547–556. Accessed July 29, 2026. https://edujavare.com/index.php/EDUJAVARE/article/view/1511.