The teaching of interesting mathematics in the lower grades of primary school has changed from kindergarten to primary school, which is a great change for children aged six or seven. From carefree kindergarten life to formal primary education, most children can't adapt to primary school life, can't sit still in class, and don't know much about primary school mathematics learning. This requires mathematics teachers to carefully design teaching methods in teaching, adopt flexible methods according to children's characteristics, stimulate children's interest in learning and fall in love with mathematics quickly. How to make primary school students have a strong interest in mathematics learning is an important topic for teachers. The author has made the following explorations in the mathematics teaching in primary schools for many years, and achieved good results.