Just after learning the number 10, I finished the lesson of "comparing sizes". Its teaching purpose is:

1. Let students know =, >,

2. First of all, we should know the method of comparing sizes, which can be compared according to the "one-to-one correspondence" method.

Teaching emphasis: know the greater than sign, less than sign and equal sign, know their meanings and master the method of comparison.

Teaching difficulties: the greater than sign and the less than sign will be used to indicate the comparison results.

Because the first-grade children have just entered school and their study habits have not yet been developed, the focus of our training is to listen to the teacher's instructions and sit, listen, speak and speak as required.

I just started class to review and lay the foundation for learning new knowledge. Then, the children's favorite game "tug of war in two classes" leads to the question "why hasn't it started yet?" Then, it uses a one-to-one method to verify the size relationship between 9 and 10.

Therefore, we can understand the equal sign of greater than sign and less than sign, understand the function of the three symbols, and use nursery rhymes to help children effectively remember the characteristics of greater than sign and less than sign. The purpose is to let children feel the fun of learning mathematics in the situation, feel that there is mathematics everywhere in life, and realize the value of learning mathematics.

Matters needing attention

The first is the processing of information window. Originally, children were asked to look at pictures to say information and ask questions, but when they tried to say it, they felt top-heavy, that is, the new lesson had not entered the key point for 10 minutes, so we decided to simply handle it here and get useful information directly. The teacher guided the children into the red dot sign problem, in order to let the children concentrate on the key point.

Compare the advantages and disadvantages of class size

Advantages: The whole class has clear ideas, compact links, outstanding difficulties and reasonable design. Students' classroom habits are very good, everyone can actively participate in the classroom, and the classroom effect is good.

Teachers are persuasive in teaching new knowledge, so that students can learn effortlessly, give full play to students' initiative, design and guide teaching well, and make students realize the connection between students and life.

Disadvantages: students' enthusiasm in class is not enough, students' divergent thinking ability and active questioning ability need to be improved, and some contents are missing.