1. Collect real-life materials: choose materials closely related to children's lives, such as fruits, toys, food, etc. Guide children to add and subtract. These materials can not only help children better understand concepts, but also improve their interest in learning.

2. Create problem situations: create different problem situations according to real life materials. How many apples do you have? How many toys do you have? Wait, let children think and solve problems in situations. This will enable children to better understand the practical significance of addition and subtraction.

3. Guide children to explore independently: give children enough time and space to explore problems independently and try to solve them. In this process, teachers can give appropriate hints and guidance to help children think and solve problems.

4. Diversified practice methods: adopt diversified practice methods, such as games, competitions and stories. Let children learn and consolidate addition and subtraction in a relaxed and happy atmosphere. You can also help children better understand concepts through physical operations, picture instructions, etc.

5, timely evaluation and feedback: timely evaluation and feedback of children's academic performance, give positive encouragement and support, but also point out the shortcomings to help children further improve.

Parents cooperate with teachers to help children learn addition and subtraction;

1. Provide a home study environment: Parents can provide their children with a good home study environment, a quiet study space and appropriate study time and tools. Parents can also carry out some interesting learning activities with their children, such as playing math games and puzzles.

2. Encourage children to do more hands-on: Through hands-on operation, children can better understand and master addition and subtraction operations. Parents can encourage their children to do more, such as building digital models with building blocks and playing addition and subtraction games with playing cards.

3. Give positive encouragement and support: Parents can give positive encouragement and support to their children, praise their efforts and progress, and encourage them to face difficulties and challenges. Parents can also discuss learning methods and strategies with their children to help them better master addition and subtraction.

4. Communicate with teachers regularly: Parents can communicate with teachers regularly to learn about their children's learning situation and progress, and also provide some suggestions and resources for their children's family learning. Through cooperation and communication with teachers, children can learn and master addition and subtraction better.