Only in March of the Julian calendar does the Gulf of Bothnia begin to thaw. When it is completely thawed and safe for navigation, it is already April.
Hanukkah ends with the first rays of sunlight in 829 AD.
The return of sunlight announced many things. As the days grew longer, the tribesmen had more daylight hours for work.
The tribe also has another tradition, that is, one hundred days after Hanukkah, when most of the sea ice melts, people usher in another festival.
For nearly half a year, the Ross tribe's longships can now sail freely on the thawing sea. The long period of time consumes a lot of people's food reserves. Even if many people carry out winter hunting, the food reserves of each household will become stretched when the thaw approaches.
Now, tribe members face new problems.
Only some people in the entire tribe are rich. The rich are often the strongest men and the most experienced fishermen. These people are eager to own a steel sword of their own and also hope to continue to purchase the soap plot itself.
In addition, they also need to obtain other consumer products to meet their needs.
The longships hidden in the dock are being repaired at an accelerated pace, and the construction of some new ships is also being accelerated in the wooden houses. Fishermen who long for greater wealth hope that the sea ice will melt as soon as possible. They have repaired hemp rope fishing nets and are ready to show their talents.
The foreigners living in Roseburg are also looking forward to it.
They have already set out to trade in the new year in the snow-covered fjords before the sea ice thaws.
The various cobblers living in the tribe were extremely busy in the winter of 828. The arrival of huge quantities of fresh animal skins has made all tannery families extremely busy.
Some tanners lack capital, and they can only get some remuneration for leather processing, and the tanned leather has to be returned to the owner of the leather.
Other cobblers naturally have capital and large families. For a time, the whole family came together to participate in leather processing.
The owner of the family invested in purchasing fresh leather from the beginning. They processed it and then further processed it, such as making it into clothes, and the wealth they gained was even more impressive.
However, if the results of the leather processing industry are only sold domestically, it is not a huge profit at all.
The only way is to sell the finished leather to the south. Clothes were made of deerskin and decorated with fox fur on the collar and cuffs. A leather jacket can even be sold for a gold coin.
If he takes another risk and sells it to an area controlled by the Danes and pretends to be a local, it is possible to get two gold coins.
Youdao means finding wealth in danger. Everyone knows this truth.
Once the powerful people among the Danes find out, his life may be lost on the southern coast of the ocean.
Most cobblers don't dare to take risks. They just want to sell their skills and start a small business safely. Life is like this day by day. Unless there is some real pressure that forces them to live no longer, the cobbler will become a pirate and plunder.
The tribal craftsmen all have this attitude towards life.
But for foreigners living as guests, the situation is completely different.
Foreigners would not and could not really join the Ross tribe. They were allowed to live in Rossburg, but they were ordered not to reclaim land for planting.
Of course, the Russians themselves can only plant some onions that are cold-resistant and can mature quickly, and they will not deliberately plant other onions.
The residents do not feel discriminated against at all, because their identities are always very similar - fishermen or pure businessmen.
Otto needed these visiting merchants, who were an important medium of communication between his tribe and his southern allies.
With the existence of these guest merchants, Otto felt that he no longer had to personally organize a fleet to go to the important activity area of the Siiya Tribe Alliance, that is, Lake Malaren, and personally sell the goods from the far north.
Over the years, residents sold their remaining goods to visiting merchants. When the ice and snow melted, the merchants transported them to the south for sale.
In this way, the Russians do not need to risk being attacked, and the goods in their hands can be quickly turned into silver coins. Why not?
Besides, everyone is more willing to look for opportunities in the east.
Many tribesmen sold all the small animals they caught in the winter, the meat was eaten, and the leather was immediately exchanged for silver coins, and even a large lump of soap.
Silver coins from visiting merchants finally gathered in Rurik's hands in large quantities.
Now the situation has changed again, and a large amount of silver coins have begun to flow into Clavarson's blacksmith shop.
After Hanukkah, the entire tribe became aware that Rurik's dagger was made for the Kravassins, and a large number of orders followed.
Clavarson encountered the most prosperous business opportunity since his ancestors started blacksmithing. He engraved all the orders on wooden boards and charged one-tenth of the deposit. He never thought that the deposit alone would be as much as 120 silver coins.
To make a new stelsvard, also known as a steel sword, it costs sixty silver coins no matter what. Each sword is very expensive, but it can cut through all the iron swords without being hurt. The huge tactical advantage makes all warriors flock to it.
The poor warriors are envious and eager to get more money in the new year. The wealthy warrior immediately paid the deposit, eager to get the steel sword as soon as possible to see if it works well.
Time has entered January, and life is still cold and boring for Rurik.
Youdao is that the coldest period in the Northern Hemisphere is winter, and the climate is even more severe at the edge of the Arctic Circle in the Roseburg area.
Even so, the tribe is still operating at a very low efficiency. Although there are still cases of people freezing to death, families with a little bit of wealth are still alive and well.
The severe cold forced Rurik to stay in a warm place. He decided to do some new tricks, which was to take advantage of the plenty of time to first cultivate some knowledge about Rumia.
It is necessary for her to step up her study of rune letters and Roman letters, and to be able to smoothly convert characters.
He began to teach her the writing and usage logic of Arabic numerals. Since it was actually her first time learning, everything had to start with the addition of single digits.
In the peaceful evening, Rumia returned to the priest's longhouse after grazing, and sat obediently in front of Rurik.
"Masta, I'm back. Regarding the matter you gave me."
"Have you finished your review?" Rurik asked with a sullen face.
"I know it. I accept the test of masta." Rumia sat down cautiously, her subconscious frown clearly showing her nervousness.
Hehe, her cautious look is so cute.
Placed in front of the two men was a dry pine board, which was actually scraps from shipbuilding. Rurik needs some brighter writing materials than oak, and even rough yellow paper is hard to come by. Now, this whitish pine board might be better.
Paper can be made! Rurik knew that theoretically all the materials for making paper were available, so he tried to purify various fibers from plants and crush them. The floc of the fibers settled into a thin layer, and after dehydration That was the original paper.
The so-called paper is probably an accidental invention during the processing of China's silk handicraft industry. Up to now, the papermaking industry in the East has been very developed.
The Western world did not invent it out of thin air. This is not surprising. The Eastern Romans still think that the so-called silk is made of a special plant, just like flax can weave cloth.
Rurik cut some black charcoal blocks into some carbon pens with a knife.
For early sketch artists, the brush in their hand was a piece of carefully carved charcoal. There was nothing wrong with Rurik's approach, but he just had to wash his hands after using it.
He had already crammed basic arithmetic skills into Rumia. After two weeks of cramming teaching, Rumia not only understood how to write all the numbers from 0 to 9, but she also theoretically understood calculations within one hundred.
"I will give you ten questions, and you must calculate the correct answer for me. If you make a mistake, do ten squats for me. If you make a mistake, it will increase by ten!"
"Okay...ok."
Rumia swallowed deeply. In the past few days, she had been punished corporally by her master for many mistakes. There were ten questions every day. If you made a mistake, you would put your arms forward and squat down and stand up ten times. The worst time was that I did fifty questions in a row!
It was a really bad feeling. I was so tired that I was out of breath, and my stomach was suddenly hungry. The worst thing was that the little master would not give me any food as compensation.
Ten arithmetic problems were written on the pine board, and the results of these problems could be calculated instantly in Rurik. It would be really stupid to not be able to quickly get the answer by mental arithmetic for addition and subtraction calculations within a hundred.
But for Rumia, it is a severe test. As simple as 20+25, she has to think about the correct answer.
It cannot be said that her IQ is stupid or anything, just because she should have been exposed to these things when she was five or six years old, but due to the limitations of the times, she was afraid that she would be illiterate all her life. A ten-year-old child is equivalent to a fourth grader. She can master multiplication no matter what.
Rumia, she already knows what the plus sign is, what the minus sign is, and what the equal sign is.
Pure numerical symbols were too abstract, so she had to use thin wooden sticks as pens on the dry land on one side to perform simple calculations.
Yes, Rurik also gave her the calculation method, so that the addition of ten digits was divided into the addition of two single digits. She tilted her head to do calculations, her movements could be described as clumsy, with a few strands of black hair hanging down from her forehead, and the braid hanging on her shoulders, she looked really cute.
"Ah! Why do I feel like I'm helping my daughter with her homework? This girl is really worrying... She's quieter, very good, very good..."
Rurik just watched her movements, his hesitation when writing, and the sudden frown on her young face. The results that adults can easily achieve by feeling sad must be a disaster for children.
"Write quickly, don't hesitate."
After saying this, the girl nervously drew a deep horizontal line directly behind the equal sign with her right hand.
"Erase it and write the answer." Rurik's serious order made her even more nervous.
She finally finished answering the ten questions, put the charcoal pen on the ground, stretched out her hands full of toner, and raised her head cautiously: "Masta, I...I'm done."
"Good. This time you got them all right for the first time."
"Ah I!"
"You succeeded, Rumia."
Rurik's deliberately tense face revealed a smile, and Rumia's tense face also turned into a long-lost smile.
"So far you have successfully completed addition and subtraction calculations within one hundred. You are faster than I thought. I will give you some rewards, Rumia, and you should also have brand new summer clothes. I will buy you one The most elegant one."
A piece of clothing? Rumia had also thought about these things. Since the little master was so thoughtful, she immediately knelt down to express her gratitude.
"Get up, Rumia. Don't think that completing this is a big victory. Everything is just the beginning. I will start now and teach you multiplication. There are many other things that other people don't know at all."
In this time and space, the original intention of an ordinary person taking the initiative to learn mathematics is probably to keep better accounts. Boys from the Ross tribe would always follow their fathers and grow up knowing basic mathematical knowledge to use in their future lives. After all, everyone uses various currencies, which in a sense are gold, silver and copper of different specifications. The price of goods is measured by the weight of precious metals. As the future heads of the family, the boys have no choice but to learn arithmetic if they do not want to be cheated by profiteers.
Mere knowledge of mathematics used in ordinary trade is too low-end, just basic arithmetic in complex mathematics.
Mathematics, it can be said to be the foundation of various science subjects!
Multiplication and division were not commonly used in business dealings between the Russians and their allies.
Rurik was different. He insisted on teaching a woman multiplication and division, as well as more advanced things, including but not limited to pi, plane geometry, trigonometric functions, and solid geometry. and elementary analytic geometry. In short, no matter how much mathematical knowledge an Oriental high school student can have access to, it should be instilled in this poor Rumia in a short period of time.
What is the new trick promised to father Otto? This is a new trick!
Raising Lumia into a child with a high IQ through cramming teaching in a short period of time was his goal.
So Rurik started teaching Rumia multiplication tables.
The pine board covered with toner was wiped clean with burlap. Rurik quickly drew a table and wrote numbers on the matrix. As long as it is not wiped off deliberately, the multiplication table on this wooden board can be naturally preserved for a long time.
The task Rurik gave Rumia was to learn it in the shortest possible time.
This is a major task. In order to help her master it earlier, we first give her the multiplication table!
Ancient Norse, counting from zero to nine, has a pronunciation that is highly similar to modern English thousands of years later. There are also two syllables in the pronunciation of numbers in Norse, but this is not an obstacle to the implementation of the multiplication table. On the contrary, because of the two-syllable pronunciation of numbers, the formula can be arranged into RAP, and the interesting rhythm is conducive to learners' memory.
It took Rurik two days to get Rumia to basically master it. After all, she is already a ten-year-old child. Although she is learning for the first time, her brain is better developed than that of a five-year-old child and she is more able to accept knowledge. This is what is called that a child who goes to elementary school at the age of nine or ten for some reason can learn all the courses of elementary school in three years and successfully catch up with the progress of junior high school.
Rumia has only just learned to use the multiplication table. It still takes a lot of time to practice to understand abstractly and to be able to quickly give answers to Rurik's questions.
Fortunately, Rumia didn't need to study anything else. She could use this multiplication table board to study all day long except for sleeping and eating, even during herding time.
She didn't dare to disobey her little master's order, she just wanted to understand this hard and boring job as soon as possible.
She is not a learning robot with no emotions.
A cold and boring grazing day, the daylight hours are still short. Now there is no priest to monitor him, no one is worried about his escape, and no one is helping him manage the deer herd.
There are only fifteen deer in the herd, and each deer has a wooden sign hanging around its neck and an iron piece that jingles when the deer moves.
The deer was leisurely digging through the snow and gnawing grass. Rumia leaned on a pine tree, paying attention to the deer and the board.
"The deer didn't run away. They... what happened to them. Three piles of five each? Huh? trefemarfemton."
A section of the multiplication table of the Norse pronunciation version came out of her mouth. Now, Rumia opened her eyes wide. She seemed to have discovered a treasure, and the way she looked at the road completely changed.
She learned from her little master that multiplication and division can perform more complex operations. She has understood that the simplest purpose of learning knowledge that ordinary people in these tribes cannot touch is to help her master manage his increasing wealth in the future.
She couldn't understand the meaning of Rurik's determination for a while, but now she had realized the true meaning of multiplication on her own through the changes in the group of fifteen deer grazing leisurely.
"If the herd gets bigger, I will definitely not be able to manage it by myself. I learned multiplication and divided the deer into many small groups, so I can quickly know how many deer I have! Oh, I am so smart. No! It's the retention Rick is so smart.”
The boring study suddenly became interesting. She held the reins of the deer and artificially divided the deer into groups to verify the correctness of the multiplication table formula.
The calculations were all correct, and her mind was no longer an abstract number, but a living deer. She closed her eyes and recited the multiplication table silently, and in her mind was a group of deer making various matching combinations.
Everything suddenly became clear.
It was February 15th in the Julian calendar, a cold evening, after Rumia happily drove her deer back. She wiped her hands clean with the snow, rushed to the longhouse of the priests excitedly, found Rurik who was helping Bona and his gang make soap, and told him that she had completely mastered the multiplication table.
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Chapter 110 Servant’s Arithmetic Teaching
