Nurmala, Hadiarti, D., & Fitriani. (2026). Effectiveness of STEM Project Using Caesalpinia sappan L. Natural ‎Dye to Enhance High School Students’ Chemical Literacy and Food ‎Safety Awareness. ISEJ : Indonesian Science Education Journal, 7(3), -. https://doi.org/10.62159/isej.v7i3.2768