Abstract: Linear algebra is one of the public basic courses for agronomy majors. The traditional classroom teaching model only adopts a lecture style teaching method, students calculating but not useing. The conventional flipped classroom is difficult to adapt to the needs of large classes of public courses. It introduced the structure of“three dimensional and three degree” online-offline course. Through“offline flipped classroom one-dimensional; MOOC + bilibili open class two-dimensional”, build a three-dimensional classroom that can adapt to online and offline switching at any time. Through the construction of“flipped classroom with difficulty, curriculum ideological and political depth, and teachers'care with temperature”, the“three degree” classroom integrating“teacher-student-class”, centering on the“student-centered”teaching philosophy, reflects the classroom requirements.

Key words: Innovative courses, “Golden courses”, Linear algebra, Courses reform, New agricultural science, “Three dimensional and three degree”