Mixed age classes can effectively promote children's language development. It is very important to cultivate children's ability to understand and express language, as well as good listening and speaking habits and interest in language communication. In the warm mixed-age class, every child is a member of this big family. In a free, relaxed and casual atmosphere, these children show more clearly that they want to talk, are willing to talk, dare to talk and like to feel the joy of talking together. In this period, if effective mixed-age education is carried out, if older children have strong oral expression ability and large vocabulary, which can influence younger children and promote each other, it will really play an important role in children's language development.
However, mixed-age classes have high requirements for teachers. Teachers should master the different levels of each child's development, accurately and appropriately divide the children into several groups, and then teach according to their characteristics: sometimes they should be grouped according to their age or ability, and sometimes they need to put forward different requirements for the same content. This operation is very difficult, and it is difficult for ordinary teachers to be competent.