1, teaching aid scenario demonstration, introducing questions. Use four kinds of fruit teaching AIDS to guide students to explore and compare the number of objects. For example, there are five oranges and three tomatoes. There are more oranges than tomatoes. Then guide the students to compare the sizes of numbers. 5 is greater than 3. By analogy, let students establish the concepts of "greater than", "less than" and "equal to" and a sense of mathematical cognition.

2. From teaching aid demonstration to concrete mathematical symbols. From perceptual knowledge to rational knowledge, let students learn to express the number of objects in mathematical language. Teach students to know the three symbols of ratio: greater than sign ">" and less than sign "

3. Understand and master the meaning of the equal sign "=" and use it in practice. Starting from the case of life equality, this paper introduces students' understanding of the equal sign "=", and probes into the practical significance of the equal sign "=". And use mathematical language to express the meaning of the equal sign "=". For example, the number of three monkeys equals three peaches, and 3=3.

4. Know and master the meaning of the greater than sign ">" and apply it in practice. Introduce the greater than sign ">" to students from different cases in life. Understand and explore the significance of the greater than symbol ">" in reality. And use mathematical language to express the meaning of greater than sign ">". For example, the number of needles on the left is more than that on the right, that is, 6 >; 4。

5. Know and master the greater than sign. "

6. Contact and expand training. The three symbols of the ratio size are greater than the symbol ">" and less than the number "