1, know which two numbers add up to 10.
Mastering 1 and 9 add up to 10, 2 and 8 add up to 10, 3 and 7 add up to 10, 4 and 6 add up to 10, and 5 and 5 add up to 10. This is the synthesis of 10.
2. Master the division of numbers.
When any number from 0 to 9 appears, children can find out its division correctly according to the addition formula. For example, like 7+8, the first step requires children to know how to divide 7 by 2 and 5, because 2+8 is equal to 10 instead of 1 and 6.
In addition to division, students are also required to divide according to the characteristics of numbers.
3, can correctly calculate 10 plus several equals several.
This is the last step of the ten-point method. However, the teaching of 10 plus a few is only learned after students know the numbers within 20, mainly through the composition of numbers to teach the arithmetic that 10 plus a few equals more than ten.
4. Understand the calculation method on the basis of concrete things.
According to Piaget's cognitive development theory, the first-grade children are still in the stage of concrete thinking in images, not to mention the children in large classes. Therefore, different versions of the teaching materials let children circle 10 first by giving a picture to understand the calculation method in the process of circle.
Therefore, to teach children how to make up ten points, at least teach them the above points. And provide more opportunities for children to draw a picture and a circle.
Let's talk about the ten laws.
This part of the content is basically arranged in the first semester of junior high school, mainly to learn more than ten and reduce a few. The textbook presents three calculation methods: ten-breaking method, addition and subtraction method, and even ten method.
In fact, the method of breaking ten is just one of them. From the practical teaching, many children prefer addition and subtraction.
Therefore, for children who teach large classes, individuals also tend to make addition calculations solid and use addition and subtraction to calculate more than ten subtractions. Breaking the ten laws is just a way of understanding.
Some points to note:
1, there is no need to force children to learn.
Children's psychological development needs to follow a certain order, and it is quite difficult for children in large classes to master the content of senior one. It's normal that children don't understand and master after parents give them counseling. Because the child's psychology has not developed enough to understand such an abstract algorithm. Parents sometimes need to wait patiently.
I remember that our children's big classes were the same at first, and then they simply gave up. After teaching in a large class next semester, the children will gradually understand.
2, provide specific food for children's reference, do not force children to calculate speed.
Specific foods can better help children understand arithmetic. At first, the calculation speed is not fast, so parents don't need to worry. The children will catch up.
Finally, for children to learn knowledge in advance, I personally feel that they hold the attitude of increasing knowledge and don't have to care too much about the effect of learning. This will make it easier for adults and children.