Division and combination are also the decomposition and synthesis of numbers, which is the basis of learning addition and subtraction within ten. You can use division and combination to quickly work out the answer to help children understand arithmetic.

For example, 5+3 =, because 5 and 3 can add up to 8, 5+3 = 8; Another example is 10-6 =, because 10 can be divided into 6 and 4, so 10-6 = 4.

I try to let the children do it by themselves and then record the results. Under the guidance of adults, I found the law of decomposition and combination, and further understood the meaning of addition and subtraction by using the decomposition and combination of numbers.

Let children get the best integration of activities and interests in the game. Master addition and subtraction within 10. Improve students' ability of observation, analysis and induction.

Through physics teaching, children's thinking is more specific. They can only think when they are related to specific things. This combination seems to be increasing, but it is actually decreasing. This is a kind of reverse thinking, which is much more complicated than simple addition. Moreover, it also makes children realize the importance of subtraction. For example, you can play a game. You can put seven balls in front of you and let your parents play your "body movements".

For example, candy bars are used instead of data to attract children, and then they are divided into two parts, which can be divided into several and several in the example. Before learning and training, teach children to count from 1 to 10, then from 1 1 to 20, and so on until 100. Then teach children from 100 to 1, first from 10 to 1, then from 20 to 1 1, and so on until they can go from 100 to/kloc-0.