Sa`adah, Kharirotus. “Efektivitas Model Problem Based Learning Berbantuan Media Ular Tangga Terhadap Kompetensi Siswa Sekolah Dasar”. Jurnal Basicedu 9, no. 6 (November 23, 2025): 1870–1881. Accessed December 2, 2025. https://www.jbasic.org/index.php/basicedu/article/view/10760.