The most important thing is to cultivate children's conscious ability and form a good habit of autonomous learning. If necessary, you can buy some reference books, such as talent courses, complete solutions for primary school textbooks, and miracle classes are also good.
In addition, the first and second grades of primary school pay more attention to students' reading and reading ability, and children can often read some poems and ancient poems. In grade three, writing ability is more important. It is important to read more documents and keep a diary. I don't know if you studied Beijing Normal University Edition or something else. If it is a Beijing Normal University edition like ours, oral English is also very important. Listen to English tapes for children, imperceptibly, without forcing.
In mathematics, primary school mathematics should be said to be very simple. It is very important to have time for children to recite multiplication formulas, so they must recite them backwards. In Olympic Mathematics, if necessary, you can learn to exercise your thinking, but you don't have to force it.