SARI, RATIH PERMATA. “KEGIATAN BERMAIN MATEMATIKA”. JPUD - Jurnal Pendidikan Usia Dini 7, no. 2 (November 11, 2013): 251–263. Accessed November 23, 2024. https://journal.unj.ac.id/unj/index.php/jpud/article/view/3874.