Choose a piece of cardboard you like, cut it into vertical strips, write down relevant mathematical formulas, and finally punch holes and thread ropes. Bookmark of mathematics knowledge. To do this, first find a cardboard card suitable for bookmarking, and then design the card according to the content of mathematical knowledge. For the sake of beauty, you can also design some pictures.

A Brief Introduction of Ma Xiaotiao's Playing Mathematics

Ma Xiaotiao plays math 1 grade, and Ma Xiaotiao, a good friend who is deeply loved by children, will take you into the magical world of math. Through funny stories, the book sets topics according to the mathematics knowledge around you, aiming to stimulate their interest and love for mathematics and let you experience the beauty of mathematics initially.

Yang, vice chairman of Sichuan Writers Association, member of Chengdu Federation of Literary and Art Circles, once worked as a primary school teacher, editor of children's books, editor-in-chief of children's publications, and an outstanding expert enjoying special allowance from the State Council.

His works have been published in English, French, German, Korean and Vietnamese all over the world.

Adhering to the idea that education should put humanistic care first in his works has had a wide influence in primary and secondary schools and has been rated as children's favorite writers for many times.