1) Explore and learn while operating. Turning teaching activities into the process of children's own active exploration, children can get active development in the interaction between subject and object. (2) Develop children's thinking structure. It not only pays attention to the learning of specific mathematical knowledge and the cultivation of ability, but also pays attention to the development of children's thinking structure, which fundamentally promotes the development of children's mathematical ability. (3) Pay attention to children's individual differences, respect each child's learning style and learning rhythm, and let each child develop at his own level. (4) Close contact with children's lives. Learning in life can help children really accumulate rich mathematical experience and help them understand abstract mathematical concepts.