“PENGARUH PENERAPAN MODEL PROBLEM BASED LEARNING TERHADAP KEMAMPUAN MEMECAHKAN MASALAH SISWA PADA MAPEL MATEMATIKA KELAS IV DI SDN 2 JERUKAN JAWA TENGAH”, IPSSJ, vol. 3, no. 05 Mei, pp. 2951–2959, May 2026, Accessed: Oct. 22, 2026. [Online]. Available: https://ipssj.com/index.php/ojs/article/view/1411