Lai, Chia-Hung, Ming-Chi Liu, Chia-Ju Liu, and Yueh-Min Huang. “Using Positive Visual Stimuli to Lighten The Online Learning Experience through In Class Questioning”. The International Review of Research in Open and Distributed Learning 17, no. 1 (February 2, 2016). Accessed April 18, 2024. https://www.irrodl.org/index.php/irrodl/article/view/2114.