Dehipawala, Sunil, Ian Schanning, George Tremberger, and Tak Choi David Cheung. 2021. “Learning of Uncertainty in an Introductory Astronomy Course in Remote Asynchronous Delivery During Covid-19 Lockdown”. International Journal of Research in STEM Education 3 (2):1-17. https://jurnal-fkip.ut.ac.id/index.php/ijrse/article/view/766.