AURA, Aura Nawang Wulan; MATIUS, Dewi; RIANI, Khotijah Mahmuda Widi; DAKHI, Yofita Jelita Linda Sari; FAD’AH, Akhmad Syaikah Nur; WIRHANUDDIN, Wirhanuddin. The Effectiveness of Project-Based Learning in Chemistry Learning: Conceptual Understanding and 21st Century Skills. Hydrogen: Jurnal Kependidikan Kimia, [S. l.], v. 14, n. 4, 2026. DOI: 10.33394/hjkk.v14i4.20994. Disponível em: https://e-journal.undikma.ac.id/index.php/hydrogen/article/view/20994. Acesso em: 8 sep. 2026.