Surbakti, Mariana Br, Charolin Tampubolon, Sanita Saragih, Esra Sianturi, Elma Sitompul, Desiana Purba, and Ade Maremare. “ Peningkatan Kemampuan Literasi Dan Numerasi Di SD Negeri 040457 Berastagi”. Jurnal Pendidikan Tambusai 7, no. 2 (May 14, 2023): 3745–3751. Accessed December 22, 2024. http://jptam.org/index.php/jptam/article/view/6298.