Bontong, Adrianus Tambing, Martha Betaubun, Karlina Wong Lieung, and Hendrika Walten. “Improving Mathematics Learning Outcomes of Elementary School Students With the Direct Learning Method (An Experimental Study in South Papua)”. Edumaspul: Jurnal Pendidikan 7, no. 1 (March 1, 2023). Accessed April 5, 2026. https://jurnal.unimen.cloud/index.php/maspuljr/article/view/6301.