Influence of Problem Solving Learning Model on Motivation of Learning Scince In Class IV SD Negeri Sukamakmur 1. Jurnal Sekolah Dasar, [S. l.], v. 5, n. 1, p. 49–58, 2020. DOI: 10.36805/jurnalsekolahdasar.v5i1.1149. Disponível em: https://journal.ubpkarawang.ac.id/index.php/PGSD/article/view/1149. Acesso em: 17 sep. 2025.