The representation system of numbers is the symbolic representation of number systems. Research shows that the mastery of logarithmic symbol system is the symbol of children's transformation from concrete mathematical thinking to abstract mathematical thinking. For children aged 3-6, to understand the representation system of numbers, we should not only understand the abstract meaning of Arabic numerals within 10, but also use numerical symbols to represent quantities.

Children's living environment is full of numbers everywhere, and they have accumulated rich digital experience before understanding and using numbers. Children's understanding and representation of logarithms implies their understanding of logarithms, and the study of written logarithms can promote children's understanding of the abstract characteristics of logarithms.

Small classes, using informal methods such as ideas to express numbers within 5; In the middle class, match the numbers with the corresponding sets, know the numbers within 10, and understand the abstract meaning of the numbers; In the big class, with the help of 100 meters, you can initially perceive the digital system within 100, and initially understand the arrangement law of the digital system.