Harsono, Tiara Friaesa, and Unik Ambar Wati. “Development of Mathflip-Pad E-Modules Based on Pbl and Muhammadiyah Values to Facilitate Student Engagement and Mathematical Communication”. Jurnal Penelitian Ilmu Pendidikan 18, no. 2 (November 15, 2025): 109 – 122. Accessed December 17, 2025. https://journal.uny.ac.id/index.php/jpip/article/view/91610.