Simorangkir, A. and Rohaeti, E. 2025. Fostering Confidence in Chemistry: How Problem-Based Learning Elevates Self-Efficacy. Jurnal Pendidikan Matematika dan Sains. 13, 1 (Jun. 2025), 198–206. DOI:https://doi.org/10.21831/jpms.v13i1.84437.