北京师范大学：高校校园关闭期间的弹性教学指南：如何确保高质量的高等教育（英文版）

Guidance on Flexible Learning during Campus Closures: Ensuring course quality of higher education in COVID-19 outbreak。UNESCO stated that, as of 16 April, school closures in many countries worldwide during the spread of COVID-19 have led to 1,575,270,054 learners being excluded from the normal learning process. Lots of countries have initiated several strategies to contain this virus, including school closures.