Mamluaturrahmatika, A. and Suwardi, S. 2025. Enhancing Problem-solving Ability and Written Communication Skills through Ethnochemistry-integrated Problem-based Learning. Jurnal Pendidikan Matematika dan Sains. 14, 1 (Nov. 2025), 46–58. DOI:https://doi.org/10.21831/jpms.v14i1.87375.