Puspitasari, Aan, Intan Susetyo Kusumo Wardhani, and Yovita Puspasari. “Development of Counting Box Media to Improve Understanding of Addition and Subtraction of Grade II Elementary School Students”. JURNAL PENDIDIKAN DASAR NUSANTARA 10, no. 1 (August 7, 2024): 192-202. Accessed November 21, 2024. https://ojs.unpkediri.ac.id/index.php/pgsd/article/view/23059.