ABSTRACT
During the COVID-19 Pandemic, the Ministry of Education of the People's Republic of China has noted that elementary and secondary schools in various regions should ensure "Undisrupted Learning with Disrupted Classes". Therefore, it is important to carry out online teacher professional development (PD) to ensure the quality of basic education. We adopt the literature research method, theoretical deduction method, investigation research method and evaluation research method. Guided by the fundamental principles of online teaching and the "Internet +" thinking, we follow the general online teacher PD process, which is building a community, defining PD issues, providing PD resources, organizing PD activities, generating PD outcomes, and evaluating the outcomes. The Chinese Universities MOOCs Platform is deployed to provide PD resources, organize and manage PD activities. Then we design and apply the MOOC-based online teacher PD support model. Empirical results have shown that this model effectively meets the online PD needs, and corrects the misconceptions of online teaching of first-line elementary and secondary school teachers during the pandemic. Moreover, this model can promote teachers' engagement in online PD. At the same time, we foster a batch of typical online teacher PD cases, which contributes to the online teaching practice to achieve "Undisrupted Learning with Disrupted Classes".