“Hypercycle” Learning System Based on “Extension Classroom”: Take Online Music Teaching During the COVID-19 Pandemic As An Example

The purpose of this paper is to provide an information interactive platform of teaching and learning, for self-learning diagnosis. We expand classroom teaching into an open teaching system consisting of “before class” (online), “in class” (online or offline) and “after class” (online), which is called “extension classroom”. This paper uses the method of complex system analysis to evaluate the students' learning state in “before class” and “after class” and concludes that the key to effective teaching and learning is that teachers clearly know how to teach and students know how to learn. This kind of teaching mechanism is realized in “extension classroom” with supercycle. We applied the “extension classroom” to the teaching of music performance during the COVID-19 pandemic, and the results showed that 65% of students improved their self-diagnosis ability, 46% had satisfactory communication with teachers, and 20% had a significant increase in learning performance.