Wulayalin, Khafifah Aulia, Muhammad Zamhari, Wicahni Ramadanti, and Stevani Nurjanah. 2025. “The Effect of PjBL-Based QODE Model on Critical Thinking and Learning Achievement of Buffer Solution Topic”. IJCER (International Journal of Chemistry Education Research) 9 (2):199-208. https://doi.org/10.20885/ijcer.vol9.iss2.art9.