2. Mathematics in life

3. Put forward an argument

4, to demonstrate

5. Point out the center

1. Be diligent in practice, apply what you have learned, establish a mathematical model for practical problems, and then use the model to analyze and predict the problem: "Explore the thermal expansion and cold contraction of bridges"

2. Put forward a clever mathematical method to solve the common and annoying little thing in life: "the unexpected benefits created by the drinking machine"

3. Study the mathematical problem itself, explore the law, and get the general methods to solve the problem: "Exploring the kinship in the fractional family" and "Mathematics in the paper plane"

4. Experience and reflection on a chapter or content of one's own mathematics study: "unconditional" reasoning, "golden section" discussion, wonderful positive five-pointed star.

5. The topic should be small, focused and targeted;

6. Opinions should be true, unique, emotional and innovative;

7. Express what you want to express in your own language.