"Micro-class" refers to the whole process of wonderful teaching and learning activities carried out by teachers around a certain knowledge point (key and difficult point) or teaching link in the process of education and teaching with video as the main carrier inside and outside the classroom. Its core content is classroom teaching videos. In addition, some teaching videos also contain auxiliary teaching resources related to teaching themes, such as teaching design, teaching reflection and teaching feedback.

First, the role of micro-courses in teaching and learning

1. Improve students' autonomous learning ability.

Function in classroom teaching. Teachers can design questions to make students think according to the characteristics and contents of new courses, and record micro-lessons to provide resources for students' preparation before class, which is of great help to the introduction of new courses. Teachers guide the important and difficult points in this section, and typical examples guide students to explore the law. After students explore independently or cooperatively, watch this video together.

Whether it is the introduction of new lessons, the understanding of knowledge or the consolidation of exercises, micro-lesson videos can be used alone or in combination. The characteristic of micro-class is that it can provide students with a relaxed autonomous learning environment than traditional classes, and carry out targeted personalized learning for students with different foundations and learning levels.

At the same time, the setting of knowledge points in different disciplines and the solution of key and difficult points can also provide humanized customized solutions. For students, learning according to their needs can not only solve the unsolved problems in class, but also strengthen and consolidate their knowledge through repeated study and practice without time limit.

2. Improve the professional level of teachers' teaching.

The recording of micro-courses requires the ability of teachers. From the beginning of topic selection, teachers are required to be clear about teaching objectives and be familiar with teaching contents. If there is any introduction or extension before class, teachers are also required to grasp the whole teaching design and thoroughly analyze the key points and difficulties. The teaching video formed on this basis should be a theme resource package integrating teaching design, multimedia materials and courseware.

In addition, due to the limited time of micro-lessons, teachers are required to have concise and logical teaching language and smooth and compact explanation process, which can also expand teachers' knowledge. To give students a glass of water, you must have a bucket of water. The recording of micro-lesson video makes teachers go through a step-by-step process of "research-practice-reflection, repeated research and practice" in the whole teaching process, and the teaching and scientific research ability is constantly improved in such repeated practice.

Second, the significance of micro-courses in teaching

Mobile learning, distance learning, online learning and ubiquitous learning based on micro-courses will become more and more popular, and micro-courses will surely become a new teaching mode and learning method. It is also a platform for students to study independently and conduct inquiry learning.

Micro-courses emphasize students' "learning" as the center, and students have more initiative in the learning process. At the same time, learning autonomy is greater, and you can master the time and times of course learning independently. But this does not mean that students can study without a teacher.

In fact, in the process of integration, the distance between teachers and students has been narrowed, and teachers have to play multiple roles, such as content presenter, learning helper and curriculum designer. Teachers should create a "positive" learning environment for students before and after class, provide different forms of scaffolding according to students' needs, and guide students' thinking, and the cultivation of this teaching mode is of great help to both teaching and learning.

Dr Desmond Keegan, an internationally renowned distance education expert, pointed out that the development of mobile learning will make students more free in distance learning, and the next generation of distance learning will be mobile learning. In the future teaching, due to the practicality, operability and practicability of micro-courses, it will bring about great changes in teaching mode, and the development of mobile learning will play an extremely important role and significance in human learning and progress.