The teacher didn't know what was going on, so he came down with doubts.

When everyone's curiosity was aroused, they came to the stage one after another to try it. After testing it with their own hands, everyone was completely convinced that it was indeed faster on the slopes.

Everyone was convinced.

Since the curved slope is faster, the winner is the Jian Zhong. In order to encourage exploration, Li Mengxi rewarded the Jian Zhong with a hundred catties of grain stamps at a time. This is a hundred catties of grain. No one who has improved his tools has rewarded so much.

I was rewarded a hundred catties in one go.

Improving tools is of course more useful, but improving tools is just technology, and the laws hidden in the balls are the most fundamental and basic science.

The heights of these two cannot be compared.

Later, Li Mengxi put another curved slope with different curvatures together with a straight slope and asked everyone which one would roll faster.

Based on the experience last time, the curve was faster last time. This time, most people rushed to answer that it was the curve faster.

Li Mengxi smiled and said nothing, "Stand to the left if you're bent, stand on the right if you're straight, come on, come on, stand still."

Li Mengxi paid special attention to one person, that Jian Zhong. He saw that Jian Zhong was confused in the crowd, and he stared at Jian Zhong for a while.

The stubborn man noticed Li Mengxi staring at him and looked at each other.

When they looked at each other, Li Mengxi smiled, and it was this smile that affected Zhong Zhong's judgment.

Li Mengxi was like a god in the army, and many craftsmen respected his wisdom.

Looking at each other, Zhan Zhong couldn't help but think that since the military advisor mobilized troops and mobilized people like this, there might be a lot of secrets in it.

The test a moment ago has proven that a curved slope slides faster than a straight slope. Now another curved slope is compared with a straight slope. The stubborn ones are more inclined to choose curves. Most people also choose the curved slope.

I chose the curved one.

But in the end, Jian Zhong sensed something unusual when he looked into Li Mengxi's eyes, and he once again chose to go with the minority.

Zhuang Zhong's guess was correct. The reason why Li Mengxi mobilized his troops and mobilized the masses really had a lot of secrets.

After that, test.

The new curved slope is compared with the straight slope. At the same height, the ball slides freely.

As a result, this time it turned out to be that the straight slope fell to the bottom faster.

Repeated many times, still the same.

Everyone was extremely curious and went on stage to try it out for themselves, and it was still the same.

This time, a small minority won again, while a large majority guessed wrong.

Li Mengxi once again gave a heavy reward. This time, there were only five people who were fast on the straight slope. To these five people, Li Mengxi rewarded each of them thirty catties of grain.

Those few people who got grain aroused the envy of everyone. Those who got grain twice in a row, and got a total of 130 kilograms of grain, aroused the envy of everyone.

——

It's all over.

Li Mengxi stood on the high platform and glanced at everyone below, scanning back and forth several times.

He asked everyone questions loudly.

"As seen.

When a tall object rolls down, it rolls farther. Someone asked, why is this so?"

"As you can see, the slope height is the same, but the slope length is different. When the soil ball rolls to the ground, it rolls the same distance. Why, the length of the slope is different, but the height is the same and it rolls the same distance. Someone asked, why is this?"

"As you can see, why do balls of the same height and the same length and slope roll the farthest on flat ground, and why do they roll closest to the sandy and rough ground? Someone asked, why is this so?

Furthermore, if the light on the ground is made to the extreme, and the sliding is not blocked at all, I dare to ask, at this time, the high ball falls and rolls to the extreme smoothness. I dare to ask, what should the ball do? Should the ball roll extremely far and stop, or should it never stop?

also?"

"As you can see, for balls of the same height and straight slopes with different slopes, the steeper the slope, the faster the ball will hit the ground.

Someone asked, why is this so?

Someone asked, the so-called [steep], what does this [steep] mean in detail?"

"As you can see, when the ball rolls on a straight slope, the speed is variable. Sometimes it is straight but fast but slow, and sometimes it is fast but slow.

Someone asked, why is this so?

Let me ask again, since both straight and curved shapes are both fast and slow, then in the end, which shape is the fastest, is it straight or curved?

If the fastest shape is a curve, then what does the fastest curve look like? And why is it that the fastest curve can reach the fastest speed? "

"Furthermore, if you play a low ball with your hand, the high ball will fall by itself. The high ball obviously has high momentum, but why is it that the low ball rolls further? Why is this?"

"Furthermore, if two slopes face each other, a ball rolls down from the left, reaches the bottom, and rolls up the right slope.

May I ask at this time, where is the height of the ball when it reaches the right slope? Is it the same as the height of the ball when it falls on the left slope, or is it slightly lower?

If so, why are they so high?

If the height cannot be equal, why is it so?

If the ball is allowed to roll back from the left and right slopes on its own, I would like to ask, does the ball roll back to the left and right without stopping, or is it gradually coming to a stop?

If it is going to stop gradually, why is it so?"

Li Mengxi asked questions repeatedly, and everyone below them fell silent.

For a long time, Li Mengxi looked at everyone and said solemnly, "These are ten questions, involving the secrets of heaven and earth, which are the fundamental and profound knowledge.

But anyone who can solve a problem will be promoted to the rank of General of Thousand Men and will be rewarded with ten thousand yuan and three hundred catties of grain and meat each!"

"Everyone, would you like to find out?" Li Mengxi asked with a smile.

——

A total of thirty-six people came to witness the experiment this time, of which twenty were craftsmen and sixteen were teachers.

When the gathering dispersed, Li Mengxi gave each of the thirty-six people a complete set of testing tools. In addition, he gave each of the thirty-six people an identity token. Li Mengxi planned to use these three

Sixteen people came to promote the experimental method.

In the second half of the day, Li Mengxi came to the school.

In a certain classroom, the teacher was teaching a new course that had just started.

The teacher held the small ball and the slide rail on the stage. He followed the steps and methods used by Li Mengxi in the experiment and told the children exactly the same experiment.

The teacher himself couldn't understand the content of the experiment, and he was full of doubts. But his attitude of being full of doubts and full of confusion was right.

Pretending to be humble because of the unknown also makes the teacher in the classroom ask all kinds of innocent questions because he himself is full of questions. He treats every child's questions with unprecedented respect and recognition.

Gululu, two hills of the same height but with different slopes rolled down, and the children watched with wide eyes.

In the blink of an eye, when a small ball hit the bottom first, the child screamed.

"Why is he so fast?"

"That's right, he always falls to the bottom first."

"Why is he so fast?"

…

The children were chattering and discussing.

(Yes, why is this? If it is steeper, it will go faster. Why is it like this...) The teacher picked up the ball and looked at it, full of doubts.

Li Mengxi's biggest worry was that he was afraid that the most difficult thing about promoting science was that there were not enough teachers.

Traditional Confucian teachers take whatever the teacher says and the children dare not ask or refute. He is always worried that letting a teacher who has read Confucian classics teach science will stifle the nature of the children.

Now he is not worried, because he found that the classroom effect is very good, and he realizes that only when the teachers know how to explore and think from the beginning, only when the teachers personally engage in science and explore each question from the beginning, as long as

The teacher has personally experienced inquiry. As long as the teacher can personally and arduously explore a certain bit of scientific knowledge from scratch, it only takes one such experience.

Then, teachers are no longer traditional Confucian scholars. They have personal experience of exploration and various questions. When they hear the same questions asked by children, they will definitely be tolerant from the bottom of their hearts.

and relief.

Li Mengxi realized that the only way to train teachers who could teach scientific knowledge in ancient times was to first turn teachers into real scientists. As long as teachers became scientists, their thinking and teaching methods would inevitably become extremely suitable.

Spread scientific thinking to others.

The better a scientist is, the more suitable he is for cultivating scientific talents.

The only way to cultivate teachers who can spread scientific methods is to let the teachers themselves first become scientists.

There is only one way.

Li Mengxi has decided that he will never tell any conclusions to the teacher in the future. He will let the teacher explore, explore, think, summarize, and comprehend entirely on his own. Only in this process can he cultivate true scientific thinking.

From now on, Mr. Li will just pretend to be a fool. From now on, Mr. Li will only ask questions and always say, "Ah, is that so? Why is that so?"

It doesn't matter whether there is a theory or whether there are results. Even if the teacher cannot discover a single scientific truth in his life, it doesn't matter at all.

In the process of inquiry, the thinking they made, the thinking they formed bit by bit, and any doubt or guess in the process of inquiry will make them become better scientific instructors. This is what Li Mengxi thinks.

need.
Chapter completed!