First of all, we should lay a good foundation: understand the mathematics education objectives of first-year students, and as far as I know, I can skillfully use addition and subtraction within 20. Knowing this, the steps are clear. 1, know Arabic numerals; 2. Understand the decimal system; 3. Understand the meaning of the formula; 4. Know how to carry. All right, that's it. Let's find a software that allows children to practice addition and subtraction in 20 minutes. It is recommended to do 60 questions in three and a half minutes.

Then cultivate the application ability. There is no real mathematics in primary schools, only arithmetic. After laying the foundation of quick calculation, solving practical problems is the key to cultivate children's ability and enhance their interest.

Mathematics originated from philosophy. On the basis of logic, mathematics came into being after the concept of set and the system of numbers appeared. Based on this phenomenon, we can learn how to help children learn mathematics.

1, four operations: On the basis of being familiar with addition and subtraction operations in the first 20 years of senior high school, I began to expand to multiplication and division operations, talking about some basic postulates, that is, the so-called "calculation generality", and at the same time introducing the basic concept of algebra "representing numbers with symbols" into teaching. If you have spare capacity, you can teach some clever calculation skills;

2. Numeric system: the number must be at least 1000, preferably 10000, so as to understand the representation of numbers;

3. The world of numbers: By teaching physical quantities such as time and quality, we can connect numbers with the real world, achieve the purpose of "rational" enlightenment, and tell the story of an important historical figure Pythagoras and his school;

4. Understand graphics: points, lines, surfaces, triangles, quadrangles, etc. , focusing on "idea" and "reality".