“Learning Media Using Qr Code-Based Professional Pdf Flips As an Effort to Improve Students’ Concept Understanding in PAI Lessons”. SCHOOLAR: Social and Literature Study in Education 2, no. 3 (December 30, 2022): 184–189. Accessed May 30, 2026. https://ejournal.unwaha.ac.id/index.php/jurnal_pengabdian/article/view/3453.