“PENGARUH PENERAPAN MODEL PROBLEM BASED LEARNING TERHADAP KEMAMPUAN MEMECAHKAN MASALAH SISWA PADA MAPEL MATEMATIKA KELAS IV DI SDN 2 JERUKAN JAWA TENGAH” (2026) Integrative Perspectives of Social and Science Journal, 3(05 Mei), pp. 2951–2959. Available at: https://ipssj.com/index.php/ojs/article/view/1411 (Accessed: 22 October 2026).