Since all students who have received pre-school education can count successfully within 100, teachers should pay attention to how to solve the difficulties in the counting process. First, let students know the relationship between 1, 10 and 100, which will help students realize that "10" is the unit. The second step is to find a seat in the cinema to solve the difficulty of "full ten into one" when students score dozens. Designing exercises with numbers close to 10 will help students to calculate more correctly and lay a good foundation. The third step is to link numbers with numbers to improve students' counting ability.
Teachers start with what students like, guide students to cooperate in groups, use their hands and brains, encourage students to think independently, and advocate diversification of methods, so that students' personality can be publicized and their thinking can be trained. We should also pay attention to the students' existing life experience, let them tell dozens around them, and carry out a series of activities such as catching candy and guessing candy.