Mursidik, Elly’s Mersina, and Veni Ambarwati. 2021. “ATHEMATIC INGER AME ERPENDEKATAN PEN-NDED ALAM PERASI ITUNG ERKALIAN ADA ISWA EKOLAH ASAR”. i: athematics ducation ournal 4 (2):55-62. https://doi.org/10.21067/pmej.v4i2.5151.