Torang Siregar, Ahmad Arisman, Iskandarsyah, Risky Ardian, Awal Harahap. Research And Developing Mathematics Knowledge Child Development Perspectives, 2022. Elm [Internet]. 2023 Dec. 17 [cited 2024 Sep. 19];1(2):65-76. Available from: https://elementaria.my.id/index.php/e/article/view/11