DesiyantiTintin, Andi Suhandi, Wahyu Sopandi, and Ersa Novianti. 2020. β€œβ€˜Is It True That The Soil Contains Air?’ (Improving The Conceptual Understanding of 5th Graders Through POE Strategy)”. International Conference on Elementary Education 2 (1). Bandung, Indonesia, 1336-48. http://proceedings.upi.edu/index.php/icee/article/view/760.