IRAWAN, Arfa Destira; OKMARISA, Heppy. The Effect of the Project-Based Learning (PjBL) Model on Students’ Learning Motivation in the Topic of the Periodic Table of Elements. Hydrogen: Jurnal Kependidikan Kimia, [S. l.], v. 14, n. 3, 2026. DOI: 10.33394/hjkk.v14i3.20847. Disponível em: https://e-journal.undikma.ac.id/index.php/hydrogen/article/view/20847. Acesso em: 8 sep. 2026.