There is no certain method to compare the number of children in small classes, and most of them are obtained through intuitive observation. However, it is unrealistic to compare the number of two groups of objects in your mind, or to abstract the number of two groups of objects and compare the size of two numbers, for small class children who think by action and can't even count objects one by one, and the one-by-one sorting method is the simplest and direct method to compare the number of objects. Therefore, in this activity, we let children judge the relationship between more, less and equal amount of two objects through physical operation, which is conducive to children's understanding of the concept of logarithm, which is a key step in the emergence of the concept of children's number. Through activities, children are initially guided to perceive and understand "how much" and "as much", which can be expressed in simple language, thus initially cultivating children's observation ability.

After this teaching activity, my reflections are as follows:

At the beginning of the activity, I used Bunny's birthday to pay for it. Mother rabbit bought them some presents. A rabbit wants a skirt, but mother rabbit doesn't know whether these skirts are enough for every rabbit. what do you think? Arouse children's interest. Let individual children try the operation and learn to compare the number of objects one by one. Then, by "giving gifts" again, further explore the one-to-one corresponding method, feel as much as possible, and complete the mastery of the important and difficult points. Guide children to find and solve problems by themselves in a relaxed and happy game scene atmosphere. In the activity, I didn't tell the children the one-to-one corresponding methods, but let them find out for themselves, which is conducive to the development of children's cognitive structure and the understanding of logarithmic concepts in the future. The goal of small class mathematics education: let children arrange two groups of objects with different numbers one by one, and then determine who has more and who has less. Finally, arrange operation activities for children, so that children can better master one-on-one methods through their favorite operation activities. Mother rabbit invited so many guests, but she didn't know if there was enough food. She wants to ask the children for help. We can compare what food is less, what food is more, and what food is neither too much nor too little. Let the children operate by themselves, and compare the number of more, less and the same two groups of objects by overlapping and corresponding ways, and perceive the concept of one-to-one correspondence.

Disadvantages: ignoring the important role of bold expression. In addition to observation, it is also important for children to express themselves, and it is also a process of learning with peers. But in teaching, I ignored this point and let my words become the main body. In fact, children's expression can be in the form of individuals or groups. Individual answers can find some individual problems and correct them on the spot. Collective answer can arouse everyone's enthusiasm, pay attention to the whole and urge children to concentrate.