Pitriani, Lusi, Effie Efrida Muchlis, and Elwan Stiadi. “The Influence of Problem Based Learning Model With Flipped Classroom on the Mathematical Literacy Ability of Class VIII Students at SMPN 19 Seluma”. International Journal of Innovation and Education Research 4, no. 1 (June 10, 2025): 64–81. Accessed July 12, 2025. https://ejournal.unib.ac.id/ijier/article/view/43312.