Rafini, R., Sugiharti, S. and Rahayu, T. (2023) “Improving Student Learning Outcomes with Project Based Learning Chemical Elements”, Research Journal on Teacher Professional Development, 1(2), pp. 197–207. Available at: https://journal.walisongo.ac.id/index.php/rjtpd/article/view/18428 (Accessed: 14 June 2026).