Abstract: To promote the informatization of education and teaching, many domestic colleges and univer-sities have adopted the "Teaching + Internet" online teaching mode. Taking the design and implementa-tion of a simulated low-pass filter circuit as an example, this paper employs the Cloud Classroom of SmartVocational Education Platform, Multisim 14. 0, and related multimedia software as teaching tools. It in-troduces a blended online-ofline teaching mode integrating the innovative PBOPSP teaching concept tooptimize and adjust traditional course teaching. Practice has shown that this teaching model achieves fa-vorable teaching effects: it improves students' ability to analyze and solve problems, and effectively reali-zes the integration of ideological and political education into teaching.

Key words: PBOPSP, filter, blended teaching, ideological and political education