Effendi, Effendi, Arini Rosa Sinensis, Thoha Firdaus, and Ilham Wijaya Sugiyono. 2026. “Validity of The Ethno-Stem PjBL Model for Optics Learning Based On The Local Context of East Oku”. Islamic Journal of Integrated Science Education (IJISE) 5 (2):171-81. https://doi.org/10.30762/ijise.v5i2.9647.