"The composition of 5 is a friend with complement, and the composition of 10 is a friend with complement. Mathematics enlightenment education can start from teaching children to know these' friends' ... "Recently, at the Children's Characteristic Education Forum held in Wuhan, Wang Gai 100, the president of Peking University Preschool Education College, gave a vivid lesson to more than one kindergarten director. Wang pointed out that there are three main factors that determine children's ability: mathematical logic ability, interpersonal skills and the ability to apply what they have learned. Children's first math education before the age of 5 can lay a foundation for future study and growth. Based on the age characteristics of children, it is best to learn mathematics in the form of games. "Children who love to play with building blocks, have strong concentration, good hand-eye coordination, and are sensitive to colors and lines often have better math scores. Therefore, we should try our best to stimulate their ability in this respect ... "Wang said, trying to integrate colors and lines into mathematics education. For example, teaching children to count with colored chess pieces and distinguishing "single and double numbers" with colors are clear at a glance and very intuitive; Or let children put 10 chess pieces into straight lines, squares or circles at will, and experience the "conservation concept" of deformation and equality.