First of all, considering the universality of online search, not all students can adapt to the online teaching environment, and not all students have this condition. It is naturally very simple for children in the city, because almost every family in the city has an internet, and there is no problem with mobile phones and computers. But for rural children, this is obviously a difficult point, because not all rural families have smooth networks, mobile phones and computers, and there are still some technical problems that parents can't solve.
Secondly, considering the starting point of children's knowledge, because some children can learn consciously and some children can't control themselves, there is no guarantee that they will go to class, because teachers can't observe the learning status of 50 children through cameras, so teaching in advance will inevitably bring different degrees of knowledge acceptance, and the gap will gradually widen after school starts. Therefore, in order to narrow this gap, it is suggested not to teach in advance, and the teaching plan will be carried out when the school can start normally, and the time is different.
At present, the school does this to ensure that knowledge can be better transmitted to students' minds, but there are some problems in the actual transmission process, such as teachers can't understand the live broadcast, parents can't access the Internet and other technical problems. Teachers can't supervise children, and parents don't always have time. These are all problems.