Baud, Grace Sylvia. “Implementation of the Project Based Learning Model in Improving Chemistry Achievement for Class XI MIPA 4 Students at SMAN 1 North Halmahera”. 12 Waiheru 9, no. 2 (December 1, 2023): 143–148. Accessed May 19, 2026. https://journal.bdkambon-kemenag.id/index.php/12waiheru/article/view/56.