Lestari, Winda, Eko Handoyo, Tri Joko Raharjo, Bambang Subali, and Decky Avrilianda. “Pengaruh Pembelajaran Berbasis Masalah Terhadap Hasil Belajar Matematika Siswa Kelas IV SD”. Journal of Education Research 5, no. 4 (December 11, 2024): 6170–6175. Accessed August 5, 2025. https://jer.or.id/index.php/jer/article/view/1989.