Argaruri, Yanuardhana, et al. “211. Meningkatkan Hasil Belajar Matematika Materi Simetri Putar Melalui Model Problem Based Learning (Pbl) Berbantuan Media Papan Siput Kelas III SD 1 Samirejo”. Prosiding Seminar Nasional Pendidikan Profesi Guru, vol. 1, no. 1, July 2023, pp. 1888-97, https://conference.upgris.ac.id/index.php/psnppg/article/view/4275.