Since COVID-19 first appeared, e-learning has become more and more common. In order to understand gender disparities in e-learners’ self-efficacy, satisfaction, motivation, attitude, and performance globally, this study will look at these variables. Many educational institutions have been forced to close due to the sudden COVID-19 outbreak, and many students have been forced to stay at home and take online courses. With the recent COVID-19 pandemic underway, there were challenges with STEM (Science Technology Engineering and Mathematics) modules and other teaching contents due to practical laboratory sessions and workshops required. Thus, the need to understand teaching style, online learning and its role in promoting a variety of desirable academic outcomes, such as increased achievement and decreased dropout rates, as well as various well-being and life outcomes, has advanced significantly. In this paper, the scientific review on teaching in Higher Education Academies (HEA) for online learning is presented with their frontiers towards sustainable education. The current work also gives an annotated bibliography that aims to consolidate and synthesise the literature on student engagement, online learning, social media, and teacher learning/training. Some conclusions and recommendations were also made on the study.