Aerobics can be divided into three categories: competitive aerobics, fitness aerobics and performance aerobics. Among them, aerobics is being applied in colleges and universities. Because of its strong sense of rhythm and simple movements, it can play a good role in exercising and beautifying the body. It has always been loved by the broad masses of the people. Popularizing mass aerobics in colleges and universities is a scientific education concept that conforms to China's "people-oriented" concept. In recent years, there have been some difficulties in the teaching methods of mass aerobics, which urgently require educators to innovate and improve in order to further cultivate the expressive force of college students.

First, the effective use of multimedia teaching, so that students have a deep understanding of aerobics

For the study of any new things, only by letting students clearly know their own advantages and values as well as the current development trend can they stimulate their inner sense of identity and thus be more attentive in practical learning. Colleges and universities should actively use multimedia teaching to let college students know the basic knowledge of aerobics and its beneficial help to the development of their own body, personality and expressive force. Students will further deepen their understanding of this course, so that they will not simply imitate their actions in class, but express their emotions after being really infected by music and atmosphere. Only in this way can their movements be smoother, their expressions more relaxed and happy, and the results presented will be more beautiful.

Second, using network technology, let students strengthen after-school exercises.

As the class time is limited and the teacher's energy is limited, the teacher can arrange the action in advance and record it as a video to share with the students, so that the students can practice watching it in their spare time and gradually increase their familiarity. Students are familiar with the movements, and the expression is well controlled, so it will be much easier to express the aesthetic feeling of the movements. Coupled with music and collective atmosphere, this is a natural expression. Many students who feel inferior and don't like acting can watch the teacher's action tutorial through their mobile phones and tablets, which solves the limitations of classroom teaching. Teachers can also build a WeChat group to share some videos of aerobics skills and excellent works, so as to increase students' aesthetic perception of aerobics and constantly improve themselves, thus realizing all-round teaching.

Third, the collocation of infrastructure and clothing.

If colleges and universities want to further develop mass aerobics, they must meet the standards in infrastructure construction. The construction of indoor venues can be included in the plan to develop the school's hard power. Aerobics courses should also be matched with corresponding costume designs, such as costumes with sports elements, so that college students can perform live when holding sports meetings or school-level ball games in schools, thus cultivating expressiveness. By attaching importance to infrastructure construction, colleges and universities can let students experience more professional and comprehensive aerobics education.