There is still a lot to learn in the field of mathematics. In the future, I will read more textbooks, thoroughly understand the textbooks, walk into the teacher's classroom, learn more new teaching concepts and methods, constantly reflect in practice and constantly improve in reflection. After this teaching activity, I realized that there are many shortcomings:

1. When using the materials provided by the teacher to explore the difference between a circle and a sphere, my purpose is to let the children find their own way to distinguish. However, in teaching, I neglected this point. Let the children tell directly by rolling, watching and touching. Therefore, there is a gap in the cultivation of children's learning methods. If, in the activity, children can find their own way, which not only develops their thinking ability but also achieves the purpose of the activity.

2. When I named my child to tell the difference between a circle and a sphere, I was too anxious. I didn't give my child enough time to talk, didn't take into account some activities of my child, and gave my child too little room for language organization and development.

In order to create a relaxed learning environment for children, I have prepared a lot of activity materials, but all kinds of materials have not played their role to the greatest extent. For example, let children distinguish the difference between a circle and a sphere by touching, watching and rolling. Some children only look and roll, but touch very little. In particular, I prepared a small table tennis ball and held it with my fist, which can quickly grasp the characteristics of the sphere, so I failed to remind the children in time.

4. Let children talk about spherical objects in life, with the purpose of making children feel that mathematics is around, mobilizing their life experience in life, and cultivating their thinking, speaking, observing and comparing abilities. There is not enough time for children in this link, and I am too anxious.

5. I found that some children are not active enough to participate in activities, so they can only finish some activities with teachers and children, and they are not creative. In addition, some children operate too slowly.