Nurmala, Dini Hadiarti, and 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.