Prehistoric I was pinched out by Nuwa

Honghuang is often recorded in Huiyuan.

When the human race was born, it was just a drop of water in the ocean, inconspicuous in the wild.

It is recorded in the previous life book that the human race spread all over the prehistoric region by virtue of reproduction.

According to Yi Huiyuan, the human race can really do it in such a long time.

So what?

There is no big boss in the clan to guard, after all, it is nothing but "food" in others' mouths.

The monster race will not die, but the human race will not thrive.

Li Yang smelled the rich smell of meat in the clay pot, and kept thinking about the future of the human race in his mind.

How about developing and growing?

But who will guard it?

After thinking about it for a while, he knew that the human race could only stand up and develop.

The demon clan has Dijun, Donghuang, demon master Kunpeng... these combat powers.

Anyone who moves a little can destroy the human race.

The same is true for the witch clan, not to mention mobilizing the ancestor witch, even a big witch is not something the human race can bear!

The human race is among them, and it is a compliment to say that they are ants!

At the beginning, the human race was almost slaughtered by the monster race, and the monster race should have been plotted by others, so that some of the human race survived!

Li Yang thought about it and set the tone for the human race. The human race can develop but not grow!

If the human race does not want to become the ration of the monster race, it needs to have its own strength background.

The cultural knowledge part is not the real combat power after all.

If the human race wants to have combat power, it needs to be enlightened and learned before they can understand these principles.

When the tribe knows what kind of world they are in, the sense of crisis will force them to move forward.

Instead of eating raw animal meat when hungry, drinking animal blood when thirsty, as recorded in the previous life book, eating the last meal without the next meal.

At that time, the human race developed, and the human race kept wandering due to the need to hunt for food!

Live wherever you go!

Like a lone wolf in the wilderness, who only hunts for food every day but is often hungry,

The fixed acquisition of food finally makes the human race settleable.

as now...

At the foot of Buzhou Mountain, the supplies seem to be abundant, but they are not inexhaustible!

The human race only hunts and kills those who are weaker than the human race.

One day it will be hunted clean.

Even if they were not hunted clean, those beings who sensed the crisis would not stay around here.

If a new child is born in the tribe, they will definitely need more food!

Hunting and killing wild animals is no longer enough.

Breeding is the right way out!

The clansmen don't even know how to write at present, want to do a good job in breeding?

There is no difference between the opening and hell difficulty!

This is why Liyang attaches so much importance to education and the cultivation of talents.

In the final analysis, there are still two words - talent!

"Brother, eat a piece of this!"

Axi handed over a piece of taro stem, with a burnt yellow skin on it.

It smells delicious, and a bite is like the fried potato snack in the previous life.

Pity the lack of BBQ ingredients.

Taro stems are currently one of the most important rations for the human race, followed by fish.

These are not what they grow.

"Second brother, Xia An, what do you think we should do if one day we can't dig taro stems at the foot of the mountain and catch fish in the stream?"

Li Yang only called the two people by their names, but asked Zhu Meng Atao Axi together.

He raised this question in advance to let the tribe have such a concept in their hearts!

The human race is not afraid of problems, and they are afraid that they will be caught off guard when they face problems!

If there is a problem, just solve it slowly.

If you are caught off guard, there should be great losses in the future.

Asking this question, Li Yang smiled and didn't ask a few people for an answer.

"Eat first, just keep this question in your mind!"

"Hurry up, I'll teach you multiplication later!"

On the ninth day, Fuxi sat cross-legged on the futon.

Slowly opened his eyes as if feeling something.

"Can you teach multiplication this time?"

In the first two days, what I wanted in my heart made my thoughts unable to pass through, and it was only a few days later when I thought about the human race. Those are just things that cannot be learned overnight!

The human race is not as good as him.

Fuxi has practiced so far, and he is not impatient.

Wait a minute, it doesn't matter.

……

Before talking about multiplication, Li Yang repeatedly talked about the decimal system.

After the second child, Xia An and the others mastered it well, Li Yang then started teaching multi-digit multiplication.

He did not ask about the human organs of several people.

Multiplication was mentioned the previous day, so Li Yang simply reviewed it for a few people.

"Two numbers are multiplied. In multiplication, these two numbers can be called factors, and the result they get is called product!"

"As mentioned earlier, a multi-digit number has a digit, a tens digit..."

Li Yang said, and turned to ask about the second child.

"What is 3x3 equal to?"

"9!"

The second child gave the answer without hesitation.

The ninety-nine multiplication table, the second child has worked hard!

"Zhu Meng, how much is 3x7?"

"I know this, it's equal to 21!"

"A Tao, how much is 2x9?"

"18!"

"It seems that you, like Ah Xi and Xia An, are very familiar with the table and back of the nine-nine multiplication table!"

Li Yang was very satisfied.

I didn't mention this myself, and they worked hard in private.

As for how hard he worked, he didn't know.

He only cares about the result.

"Brother, when I memorized the ninety-nine multiplication table, I found that 2x3 and 3x2 have the same result. Is there any difference between the two?"

"The result is the same, but the meaning is different! Apart from the meaning, there is actually not much difference!"

Li Yang thought that he had to make a decision on this, otherwise the clansmen might not be able to figure it out when the time comes.

In the previous life, these were defined after some changes, commonly known as curriculum reform.

The changes are about 'multiply' and 'multiply by'.

3 people each ate 2 pieces of taro stems, how many taro stems did they eat in total?

再‘乘’和‘乘以’区分前，只能读作‘2乘以3’或者‘3乘2’，如果有读者列成‘3x2’这样的式子，则被视为全错。

The results of '2x3' and '3x2' are the same, and it conforms to the commutative law of multiplication. In order to reduce the difficulty, the references of multiplicand and multiplier are no longer used, and they are collectively called multipliers or factors.

两个因数它们位置可以交换，再读它们不能用‘乘以’只能用‘乘’，对式子‘2x3’，既可以读作‘2乘3’也可以读作‘3乘2’！

Although the positions of the factors can be exchanged, the meaning of multiplication does not change depending on the specific situation.

Based on the results of how many taro mangans eaten above, the formula can be listed as '3x2' or '2x3', but there is only one meaning, that is, how many taro mangans were eaten by the three people.

Not how many taro stems add up to eat... people!

"Generally let you calculate the result, you only need to calculate the result, which involves meaning and specific situations and then judge by yourself!"

Mentioning this, Li Yang took advantage of the opportunity to propose multiplication and exchange!

"Two factors, they can swap places! The result doesn't change!"

"This law, I call it: the commutative law of multiplication!"

On Nine Heavens, Wa Palace.

Fuxi murmured about the 'commutative law of multiplication' thoughtfully.

"Factor? Different meaning? Same result? Interesting swap!"

He looked forward to Li Yang's teaching later on.