Pramswari, L. P., A. Widodo, A. Sujana, and W. Sopandi. “Application of the Nature of Science in Elementary Science Learning During the Covid-19 Pandemic ”. International Conference on Elementary Education, Vol. 4, no. 1, Apr. 2022, pp. 407-1, https://proceedings.upi.edu/index.php/icee/article/view/2012.