1, Introduction:

This paper introduces the concept of 100 million and emphasizes its huge number.

Leading to the question, how big is 100 million? For an ordinary person, the figure of 100 million is hard to understand intuitively.

2. Understand the size of 100 million with reference to everyday objects.

Imagine a card with 100 million dots on it.

Metaphor: 100 million cards can cover a big city.

Example: How many football fields can 100 million grains of sand fill?

Contrast: 1 100 million seconds is equivalent to how many days, hours and minutes.

3. Understand the scale of 100 million with time as a reference.

Metaphor: 100 million years is almost negligible for life in the universe.

For example, how many things can happen in 100 million years is almost unimaginable for human beings.

Contrast: 1 100 million years is equivalent to many geological periods of life on earth.

4. Understand the scale of 100 million with reference to human society.

For example, the pressure of 100 million people on a country's economy, resources and environment.

Contrast: How many countries have a population of 100 million?

For example, 1 100 million people watch videos online or engage in other network activities at the same time, which puts pressure on network bandwidth and servers.

5. Conclusion: It is unthinkable to emphasize the figure of 100 million in daily life. It is suggested to deepen the understanding of the figure of 100 million through scientific calculation, metaphor and examples.

The meaning of math diary:

1. Understanding and consolidating mathematical knowledge: By writing math diary, students can review and summarize their mathematical knowledge in class and deepen their understanding of concepts and skills. At the same time, they can also apply what they have learned to real life by solving mathematical problems in real life, thus consolidating their mathematical knowledge.

2. Cultivate mathematical thinking: Writing math diary requires students to describe and solve problems in mathematical language. In this process, students need to learn to think and analyze problems with mathematical methods, so as to cultivate their own mathematical thinking.

3. Enhance problem-solving ability: Writing math diary requires students not only to understand and apply mathematical knowledge, but also to solve real-life problems. In this way, students can better understand the application of mathematics in real life and improve their problem-solving ability.

4. Promote self-reflection and learning: Writing about math diary requires students to reflect and learn. In the process of writing a diary, students need to think about their own advantages and disadvantages in mathematics learning, formulate learning plans and methods, and improve learning effects. This helps students to form good study habits and attitudes.

5. Enhance writing and expression skills: Writing about math diary not only requires students to understand and apply mathematical knowledge, but also requires students to clearly express their thoughts and opinions in words. This helps to improve students' writing and expression skills.