A: We roughly divide the content of children's mathematics learning into the following three sequences:

1. Logical relation

This part of the learning content mainly includes class inclusion relationship and classification, one-to-one correspondence of elements in two sets, order relationship and sorting, and mode.

2. Numbers and quantities

This part of the learning content mainly includes counting, natural numbers within 10 and the relationship between numbers, addition and subtraction of numbers within 10, and distinguishing the difference of the number of objects (size, length, weight, time, etc. ) and simple measurement.

3. Space and form

This part of the learning content mainly includes spatial relationship and spatial orientation, common geometric figures and geometric bodies. ; The main learning contents of each sequence listed above need to help children gain corresponding key experiences through spiral systematic teaching in small, medium and large classes. The so-called spiral teaching means that a content (such as classification) should be carried out in junior, middle and large classes, but the problems to be solved should be gradually improved or expanded.