Trisahid, Tazkiyatun Nafsi, Duangsmorn Kijkosol, and Christine Corrales. 2024. “Optimization of Biology Learning on Excretory System Material through Contextual Teaching and Learning Approach”. Journal of Academic Biology and Biology Education 1 (2), 82 - 91. https://doi.org/10.37251/jouabe.v1i2.1165.