Zunarni A, Zainuddin M, Arifin S, Sari Rufiana I. Development of a PBL-based differentiated e-module to improve mathematical problem-solving skills of fifth grade elementry school. jbpd [Internet]. 2026 Jun. 17 [cited 2026 Oct. 18];10(2):170-9. Available from: https://ejournalstaging.unikama.ac.id/index.php/JBPD/article/view/13384