You can't see the backstage people in the offline online class of Nanjie Primary School in Yangxian County. Only the chat messages sent by students can be seen, and some even allow students to answer questions.

The online course system has the following functions:

1, interactive live broadcast. During the online class, students can interact with teachers. For example, students can apply to speak when they encounter problems, and they can ask questions to the teacher after they get the teacher's consent. For example, teachers can ask questions to students at any time in the process of explaining classroom knowledge, which can help students concentrate and support the use of PPT, video and other multimedia teaching tools in the teaching process.

2. Voice communication. In the process of online class, students can communicate with teachers through voice or video, which can effectively improve the teaching quality. Teachers can also share computer desktops with students, which helps students understand the course content. The online school system of Kexun Online School includes interactive live broadcast, voice communication and screen sharing.