Abstract: Flipped classroom is a mixed teaching model that includes two basic links of online independent learning and offline interactive teaching. It aims to create a student-centered teaching situation and improve students' higher-order cognitive ability. Under the background of online teaching in universities, it is of great significance to study the construction of online flipped classroom. Based on the teaching practice of hydraulics course and the combined application of SPOC and Seewo whiteboard cloud classroom, this paper constructed online flipped classroom, proposed the optimization strategy of online flipped classroom. The effect of autonomous learning is improved by supplementing instructional video resources, building in-class test modules, and adjusting learning time. The learning effect of interactive live teaching is improved by summarizing, breaking down exercises, working together to complete comprehensive tasks, and drawing knowledge maps collaboratively.

Key words: Flipped classroom, SPOC, Cloud classroom, Interactive teaching