1. Observe the children's reaction in the evaluation process and make an evaluation.

Teachers should pay attention to observing children's expressions, answering questions, participating in evaluation, collecting relevant information and making judgments on children's learning process.

For example, did the child pay attention to the teacher's explanation? Can you participate in the evaluation process according to the teacher's guidance? Can you evaluate the observed operation according to your own understanding of the rules and requirements? Wait a minute. On this basis, teachers reflect on demonstration and explanation, and adjust the focus of supplementary explanation and demonstration.

2. Guide children to try to operate and evaluate their understanding of mathematical problems and the law of activities.

Teachers can further observe the attempts of individual children with moderate and weak abilities to judge whether they understand the rules of activities. While helping these children to constantly clarify the rules and requirements, it also enables other children to consolidate their understanding of the rules and requirements while observing and judging peer demonstrations.

Evaluation in Group Operation Activities

Group activities are an important part of children's learning mathematics. In this link, children gain relevant mathematical experience by operating mathematical materials, and improve their learning attitude and learning ability in the process of operation. In group homework activities, children's understanding of the rules of activities and thinking about mathematical problems will be presented to teachers in an unobstructed view, which is most convenient for teachers to judge children's real mathematical ability and development level and provide basis for teachers to give individual guidance.

In the process of group activities, we mainly use the methods of observation and interview to understand the real thoughts of each child's activities, discover the unique activities of children, diagnose and identify the different development levels of children, and take targeted personalized guidance on this basis.