How to teach mathematics addition and subtraction in the first grade of primary school?

First of all, it is very important to teach children to count from an early age. Then, when the child can count from 1 to 10, he can be taught to count objects. For example, the stool at home, the apples on the table, and the candy given by the teacher. Then wait for the child to come home, count the number of people in the family, cook some dishes, go to the supermarket to buy some things, and let him count as long as he has the opportunity, don't bother. Only when it is applied to objects can children have the concept of number.

Children should keep in mind that the methods of "9-to-0/","8-to-2", "7-to-3", "6-to-4" and "5-to-5" are simple and easy, and the thinking process includes "looking at large numbers (looking at large numbers), dividing decimals (looking at decimals), doing ten and adding even numbers".

Teach children from a simple beginning, such as 1+ 1=2, 1+2=3. First, with physical objects, such as 1+ 1, you can get 1 apple and 1 apple.

Teach children to count objects first, not with their fingers. To deepen the concept of numbers, we should first let children calculate in kind and then teach them to use their fingers. Otherwise, children will rely on their fingers and don't understand the true meaning of numbers.

10 related formulas for addition and subtraction:

I. Addition formula within 10

1+ 1=2

2+ 1=3, 1+2= =3

3+ 1=4,2+2=4, 1+3=4

4+ 1=5,3+2=5,2+3=5, 1+4=5

5+ 1=6,4+2=6,3+3=6,2+4=6, 1+5=6

6+ 1=7,5+2=7,4+3=7,3+4=7,2+5=7, 1+6=7

7+ 1=8,6+2=8,5+3=8,4+4=8,3+5=8,2+6=8, 1+7=8

8+ 1=9,7+2=9,6+3=9,5+4=9,4+5=9,3+6=9,2+7=9, 1+8=9

9+ 1= 10,8+2= 10,7+3= 10,6+4= 10,5+5= 10,4+6= 10,3+7= 10,2+8= 10, 1+9= 10

Second, the subtraction formula within 10