1, can skillfully count down from "1".
2. Be able to count skillfully from a certain number in the middle. For example, the teacher said: count from 4; Count from 12.
3. Be able to count down from a certain number in the middle skillfully. Example: The teacher said: Count down from 4, and count down from 12.
The second step: let children master the relationship between numbers skillfully;
For example, what is in front of 5? What's behind? 8 What's ahead? What's behind? Counting forward from 5, counting backward, counting from
1 1 Count forward and count backward.
Step 3: Let children master the relationship between numbers: for example, which is bigger, 7 or 8? 12 or 4, which is bigger?
Step 4: Let the children learn to read the questions. Many children can read the questions, but they can't understand them. Children know how to write "+"and "-",but they don't know how to read them. Let the children read it out and do the next calculation. Tell them to count backwards when reading "add". When they read "minus", they count forward.
Step 5: Teach children to know the unit and ten, and let them skillfully say what the unit and ten in the two-digit number are. For example: 15, the unit is 5, and the decimal number is 1.
Step 6: Teach children to calculate.
Extended data:
Arithmetic is the oldest, most basic and primitive part of mathematics. It studies the properties and operations of numbers. The oldest mathematics, arithmetic, is formed by accumulating and sorting out the properties of numbers and the experience of four operations between numbers in the application process. All mathematics in ancient times was called arithmetic, and modern algebra and number theory originally developed from arithmetic. Later, the concepts of arithmetic and mathematics appeared, which replaced the meaning of arithmetic and included all mathematics, and arithmetic became a branch of it.
Modern elementary mathematics education can be said to have started after the promulgation of Guimao academic system (1903), the abolition of imperial examinations and the establishment of primary and secondary schools in the late Qing Dynasty. At that time, there were arithmetic classes in primary schools and mathematics classes in middle schools (including arithmetic, algebra, geometry, trigonometry and bookkeeping). In the early years of the Republic of China (1912 ~1913), the academic system of "not letting children learn from ugliness" was announced, and the middle school was changed from five years to four years, and bookkeeping was no longer taught in mathematics courses. The longest implementation is the Ren Xu school system announced by 1922, which changes primary and secondary schools to six years, with two grades in junior high school, four years in junior high school, two years in senior high school and three years in junior high school. Junior high school mathematics teaches arithmetic, algebra and plane geometry, while senior high school mathematics teaches plane triangle, senior high school geometry, senior high school algebra and plane analytic geometry (senior high school is divided into arts and sciences, and some science subjects add solid analytic geometry and preliminary calculus). This academic system has basically been used 1949. After the founding of People's Republic of China (PRC), primary and secondary education has been reformed. The academic system is mostly changed to six years in primary school, three years in junior high school and three years in senior high school, and arithmetic classes are gradually abolished in junior high school. In 1950s, the teaching of plane analytic geometry was stopped in high school mathematics, and then the basic knowledge of calculus, probability theory and computer was restored and increased.
Baidu Encyclopedia: Arithmetic