Tarigan, A. T. S. B. ., Siswanto, S., Silaban, R., & Sutiani , A. (2026). Needs Analysis for Developing Ethnoscience-Integrated Project-Based Learning Chemistry Teaching Materials Supported by Digital Video on Macromolecule Topics in Senior High School. Journal of Educational Sciences, 10(6), 338-350. https://doi.org/10.31258/jes.10.6.p.338-350