PENGARUH PENERAPAN MODEL PROBLEM BASED LEARNING TERHADAP KEMAMPUAN MEMECAHKAN MASALAH SISWA PADA MAPEL MATEMATIKA KELAS IV DI SDN 2 JERUKAN JAWA TENGAH. IPSSJ. 2026;3(05 Mei):2951-2959. Accessed October 22, 2026. https://ipssj.com/index.php/ojs/article/view/1411