Alfarisi AR, Fiantika FR. Spatial Thinking Process of Curved-Sided Room Building Material for Grade V Elementary School Based on Ecomathematics. FJAS [Internet]. 2024 Sep. 10 [cited 2024 Sep. 19];3(9):3667-76. Available from: https://journal.formosapublisher.org/index.php/fjas/article/view/10914