Han sheng mathematics * * * is divided into five categories:

Number and calculation-it introduces the concept of number, such as odd number and even number; Single digit, ten digit, hundred digit; Mode, median, arithmetic mean; Binary number, decimal number; Roman numerals, etc. , and the calculation principle of addition, subtraction, multiplication, division and sum function of numbers.

Quantity and measurement-it introduces the size of length, weight, volume, area, capacity and time, and how to measure these quantities.

Geometry and space-introduce the concepts of plane and solid, such as one-dimensional space, two-dimensional space and three-dimensional space; Straight line, line segment and polygon; Round and oval; Symmetry and helix, topology, etc.

Statistics and probability statistics are a method used when dealing with a large number of data. For example, to calculate the total population of the country, we should not use "number and calculation" to calculate a number, but use statistics to do the overall calculation. Prediction is another function of mathematics, which is sometimes realized by probability. Probability is a question of probability, through which we can calculate the winning rate and the probability of the big sun.

Set and proof set are about the relationship between elements and sets, which are simple logical elements in mathematics. Proof is a method to determine from one fact to another, and it is also a method to help children establish mathematical logic.