Y. Rahayu, “Pengembangan Alat Peraga Papan Pelangi pada Operasi Hitung Pecahan di Sekolah Dasar”, jdpd, vol. 2, no. 2, pp. 299–318, Oct. 2018, Accessed: Oct. 29, 2026. Available: https://ojsdikdas.devapps.id/index.php/didaktika/article/view/79