作为理工科的基础课程，大学物理传授基础知识及科学的研究方法，课程理论内容完备且教学形式多样. 本文主要介绍了在面对新冠肺炎疫情之时，如何基于优化组合的教育技术开展有效的在线教学. 本教学团队不仅通过中国大学慕课平台给学生创设了一个自主学习的空间，更通过有效的实施方案( 课堂派直播互动教学、QQ 答疑、慕课堂平台监控) 和多维度的评价方式( 课前预习、课中互动、课后自测) 让学生感受到一个有温度的大学物理在线课堂.

As a basic course of science and engineering，college physics with complete theoretical content and diversified teaching forms let students learn basic knowledge and scientific research methods. It is introduced in this paper how to develop an effective online teaching based on optimized combination of educational technologies in face of COVID-19 epidemic. The teaching team not only creates a space for students to study independently through the MOOC platform of Chinese universities，but also makes students feel a warm online college physics class through effective implementation plan ( live interaction，asking and resolving，classroom management) and multidimensional evaluation ( preview before class，interaction in class and self-test after class) .