Beihai frog computing power

1. Tianji 1000 is a new 5g chip brand of Lianfa technology

on the afternoon of November 26, 2019, Lianfa technology officially released the brand-new 5g chip brand "Tianji" at the press conference of "MediaTek 5g is more than leading" in Shenzhen, and brought the first integrated 5g SOC, Tianji 1000<
Chinese name
Tianji 1000
brand
Lianfa technology chip brand
release time
November 26, 2019
release location
Shenzhen
chip
features

it is reported that Tianji 1000 has a number of the world's first, including the world's fastest 5g single chip, the world's first to support 5g al carrier aggregation, the world's first to support 5g al card and al standby, the world's first to support 5g al carrier aggregation, the world's first to support 5g al card and al standby The world's first 5g SOC integrated with Wi Fi 6, the world's first flagship 4-core a77 CPU, the flagship Mali G77 GPU and the world's highest Antu running score
in addition, Tianji 1000 also brings hyperengine 2.0 technology, including network optimization engine, intelligent load control engine, control optimization engine, image quality optimization engine, etc<
chip configuration

Tianji 1000 adopts 7Nm process technology. In terms of CPU, it adopts 4 core + 4 core architecture, including 4 2.6GHz a77 cores, which is 20% higher than the previous generation, 4 2.0GHz A55 cores, and 9 core Mali G77, which is 40% higher than the previous generation G76. Antinutu runs more than 510000 +
Tianji 1000 is equipped with a new APU architecture, which adopts two cores + three small cores + one micro core. Compared with the previous generation, the performance is improved by 2.5x and the energy efficiency is improved by 40%. It is worth mentioning that in Zurich's AI benchmark running score list, Tianji 1000 leads Kirin 9905g and Kirin 990 chips with a total score of 56158, which is twice the total score of snapdragon 855 plus<

AI independent processor
apu3.0 supports advanced AI camera functions, including auto focus, auto exposure, auto white balance, noise rection, high dynamic range HDR and AI face recognition, and is the world's first 4K HDR video that supports multi frame exposure
Tianji 1000 has a 5-core ISP (image signal processor), which can capture up to 80 MP images at a speed of 24 times per second. It also supports 32 MP + 16 MP al camera combination, the chipset also supports 4K video @ 60 FPS, and supports multi frame video HDR on the mobile chipset for the first time

Tianji 1000 also supports FHD + display up to 120Hz and 2K + display up to 90hz. It is the world's first mobile platform to support 60 frames of Google AV1 format at 4K resolution, upgrading the video streaming experience to a higher standard[ 1]
5g performance
in 5g, Tianji 1000 is officially known as the world's fastest 5g single chip. It is the world's first 5g chip that supports 5g al-mode and al carrier aggregation. It has the highest throughput in the world, with a downlink speed of 4.7gbps, an uplink speed of 2.5Gbps, and a 5g signal coverage increase of 30%; In addition, Tianji 1000 is also the first 5g chip to support 5g + 5g al card and al standby. It supports sub-6ghz band SA independent networking and NSA non independent networking, as well as 2G to 5g generation cellular network connection
wireless connection

in terms of wireless connection, Tianji 1000 also supports the latest Wi Fi 6 and Bluetooth 5.1 + standards, which can realize the fastest and most efficient local wireless connection and provide more than 1Gbps network throughput in terms of both downlink and uplink speeds. Compared with Youshang flagship (2 * 2802.11ac), Tianji 1000's downlink peak throughput increased by 52% and power consumption decreased by 70%[ 1]
positioning function
in terms of positioning, Tianji 1000 supports all-round al frequency GNSS positioning system, and L1 supports satellite systems including GPS, Beidou, Galileo, QZSS and GLONASS; L2 support satellite systems include GPS, Beidou, Galileo, QZSS and NAVIC< It is understood that the first terminal carrying Tianji 1000 will be put into mass proction in the first quarter of 2020.

2. Guangxi Tiandong Roche aquaculture farm. Main procts / services: large supply of high-quality artificial cultured pond horned fish and frogs. Address: Tiandong County, Guangxi

3. It's a short-sighted frog sitting in the well. The bird came and landed on the edge of the well< The frog asked the bird, "where are you from?"
the bird replied, "I've come from the sky, and I've been flying for more than 100 li. I'm thirsty. I've come down to find some water to drink."
the frog said, "my friend, don't talk big! The sky is just as big as the mouth of the well. Can you fly so far? "
the bird said, "you are wrong. The sky is boundless. It's so big! "
the frog laughed and said, "my friend, I sit in the well every day. When I look up, I can see the sky. I can't get it wrong
the bird also smiles and says, "friend, you are wrong. If you don't believe it, jump out of the well and have a look. "
it comes from autumn; Water (excerpt)
Zhuangzi and his disciples in pre Qin Period. Jingliu of the big, between the two Lanzhu cliff, do not argue cattle and horses. So Yan, he Bo is happy, to the beauty of the world for himself. It's down the river and eastward, as for the North Sea. Looking to the East, you can't see the water. So, he Bo began to turn his face, looked at the ocean, sighed and said: "if there is a wild language, I call it" if you hear a hundred words, you think you are not yourself. ". I've heard about Shao Zhongni, but I've never believed in Boyi before. Now I see that my son is difficult and poor. If I'm not a son, I'll be in danger. I've always laughed at Dafang's family. " Beihai Ruo said, "well frogs can't talk to the sea, they are confined to emptiness; Summer insects can't speak to the ice, they can't speak to the time; Qu Shi can't talk to the Taoist, but to teach. Now I come from the cliff and look at the sea. I know that I am ugly. I can talk with you about Dali. The water in the world is no greater than the sea. Ten thousand rivers return to it, and I don't know when they will stop and not be full; I don't know when it's over; Spring and autumn are the same, but the floods and droughts are unknown. The flow across the river can't be counted. However, I have never compared myself to the heaven and the earth, but to the Yin and Yang. I am between the heaven and the earth, just like a small stone and a small wood in the mountains. Fang Cunhu see less, but also Xi from more! Is it not as if the sky is in daze? Is China in the sea not like rice in the big warehouse? The number of the number of things is called ten thousand, and people are in one place; When a person dies in Kyushu, he is born of grain and food, and passes by boat and car. This is more than all things, not like the end of the horse? The five emperors, the three kings, the benevolent people, and the scholars should do their best! Bo Yi's language is named, and Zhong Ni's language is Bo. It's more than water, isn't it? "

4. Nanshannan - maki
CI: maki
Qu: maki
you are in the south sun
snow
I am in the north cold night
four seasons are like spring
if it's too late before dark
I'll forget your eyes
I can't finish a dream

he doesn't talk about the lonely island he met anymore
because his heart is deserted
he I can't hold another home in my heart
to be a mute who only lies to himself
he said that any of your praiseworthy beauty
is not as beautiful as the first time he met you
time lingers
helpless
if all the land is connected
to go on for a lifetime
just to hug you
drunk his dream
good night
he heard someone singing an old song
singing Today is still far away
like in his eyes
see the island
no sadness
but no flowers
you in the southern sun snow
I in the northern cold night, four seasons like spring
if it's too late
I'll forget your eyes, I can't finish a dream
you in the southern sun snow
I am in the cold night in the north, the seasons are like spring
If I have time before dark
I will forget that your eyes are extremely poor in my life
I can't finish a dream
I wake up from a big dream
absurd in my life
nanshannan
Beihai Beihai tombstone
nanshannan
nanshannan has Valley pile, nanfengnan
Beihai Beihai tombstone
nanshannan
Beihai Beihai Tombstone
there are tombstones in Beihai

5. Two weeks ago, when I came home from school, I saw a shop full of students of my age buying drinks and various meat kebabs. But then an uncivilized thing happened
on the way, I still saw many students clattering in the play. After eating, they threw it away, regardless of whether there was a garbage can around. Those plastic boxes and cups fell on the roadside flowers. It won't be long before a stman comes to pick up the scattered rubbish. But in a few days, there will be garbage in the lush flowers
I think these students are too uncivilized. There will be a garbage can not be far away from the roadside. But in the eyes of these students, it seems that the grass is the real garbage can. There are some garbage boxes that haven't been cleaned up. After a long time, they will naturally give off all kinds of bad smell. Moreover, these foam and plastic boxes will not rot, buried in the soil, will make the surrounding land also become a wasteland. In this way, not only the air will be polluted, the environment will be damaged, and even the land resources will be lost
the impact of this incident is too great. In 2011, Shenzhen will hold the Universiade, and many foreign guests will come to Shenzhen. As a Shenzhen citizen, if foreign compatriots see this kind of thing happening, not only Shenzhen people can't look up, but even the whole Chinese people's face will be swept away
think about how much this will affect the society and the environment! Those students, please throw the garbage into the garbage can after eating, and maintain the pure land of Shenzhen<
admin
published on May 19, 2013 08:07:41
protecting frogs
one day, on my way home, I saw a stall surrounded by many people, so I went to it curiously. I don't know. I'm scared. There are more than ten nets on the ground! Each net is filled with big frogs and small frogs. The frogs in the net look listless, open their mouths, pull their heads, and their protruding eyes are half narrowed. Seeing this scene, I think back to the time when I saw "quack quack" frogs by the pond. They are very different from the frogs I see today. Looking at their ll and frightened eyes, I felt that they were asking for help, as if they were saying to us, "I'm a beneficial animal. Let me go!" The peddler saw that I had been standing here for a long time and thought I wanted to buy frogs, so he said to me solemnly, "little friend, do you want to buy frogs? They are very fat, fragrant and tender, or wild. You can eat them for the first time and want to eat them for the second time." When people around them heard that it was wild, they reached out to buy frogs one after another. After a while, all the frogs were robbed. Seeing this, I have a big question in my heart: why do we kill frogs after they have made contributions to us< Published on May 19, 2013 08:07:49
frog is a professional "pest control expert". It is a small animal beneficial to crops. It is introced in books, newspapers and TV. We should protect frogs. It catches pests in a very special way. Frogs bow their backs, support their four claws, open their mouths, stare at their targets. When it felt that it could attack, it suddenly darted. Originally, it had a long tongue like a flying fork out of its big open mouth. It stuck to a bug like lightning and quickly rolled it into its mouth. A frog can kill thousands of pests a day. It is the natural enemy of pests. It is said that a frog can jump as high as 130 cm. At such a high height, only fleas can compete with frogs. The eyes of a frog are very big. They are the right assistants for frogs to catch insects. Their eyes are like two crystal clear glass balls. They are bulging high and blinking. If there are pests behind them, they can find them in time and will not let them escape< The frog is a famous "field guard". Frogs can be the "patron saint" of crops in the field. In the field, they can make crops have a good harvest, because frogs can eat insects, and the most pests in the field, such as mole crickets, longicorn, locusts and other pests can be seen everywhere, but frogs can eat pests, so that the crops will not be invaded by pests. If the frogs are not put into the field, the crops in the field will be eaten by pests, so that the crops will not have a good harvest, and there will be insects in the fruits, so our safety will not be guaranteed. You might say, "I don't release frogs, I can use pesticides." But you can imagine the harm of pesticides. If you use pesticides, the crops are not environmental protection food. Moreover, if the vegetables are not washed clean, they will be harmful to human body. On the contrary, if you release frogs, the crops will not be attacked by pests and pesticides, so you have the best of both worlds
I think frogs should be protected, and those who catch frogs for the first time should be warned and ecated. If the circumstances are serious, they should be fined. Detain those who have been taught repeatedly
here, I call out: don't catch frogs. Frogs are good friends of human beings and small animals beneficial to crops“ Everyone is responsible for protecting animals. " Let's take action!

6. The large-scale Internet cafes with more than 300 computers in Beihai are the natural Internet cafes of Xinli and the Tiantian Internet cafes of times square. The environment and machine configuration are first-class, especially the Tiantian Internet cafes newly opened this year

in addition, the Internet cafes on the scale are all telecom / Netcom al line, and the larger scale are all optical fiber access above 10m.

7. One generation? I saved an article before...

I. Introction to the game
this is a role-playing game launched by TGL company. The game runs under win 95. The game describes the story of a few little girls who want to become a magician and learn magic from their grandfather in his forest cabin. There are 73 kinds of magic to learn in the game, and there are 150 kinds of magic materials to collect. These materials are distributed in 60 scenes, so we really need to cultivate them well. Although this game is a role-playing game, it has a strong nurturing game style. The small animation of the game is exquisite and lovely, the graphics are small and exquisite, and the characters are extremely lovely. The music and sound match very well. The operation of the game is simple and easy to use. After playing the game, people think it's good to be a child< Second, complete strategy
the story of Lanmu
Master wakes Lanmu up early in the morning to learn magic. The first thing to learn is "the magic of making bread.". Master said that a magician needs to eat bread made by magic. After practicing the magic, he can make bread even without magic materials. Lanmu took 4 days to learn the magic and 3 days to deploy magic materials that can be used 3 times. After three times of successful use outside the house, you can report to master, and Lanmu's level has become the fourth level "collector"
the master made Lamu master "wind blade magic". This is the magic for Lamu to go out to deal with wild animals. Wind blade magic is recorded in a book "pure elemental magic and its secondary relevance" (good esoteric title). After learning it, you have to go to the field to Collect Magic materials. Because the mysterious black flowers in these materials are not the flowering season, you have to exchange them with wizard Jia Shitong who lives in "Xishan and windy terrace"
I found a star shaped stone by the river side of the "Western River bank", just as the magician Jia Shitong needed it. So LAN Mu got six mysterious black flowers from Jia Shitong, which were necessary for the deployment of wind blade magic. Grind the mysterious black flowers, then get the red smooth ore (sun dried) and green poison stone (barbecue) from "mole cave", then stew and find the short leaf grass root from "cabin in the forest". Deploy "wind blade magic". Try some wild animals in the wild, the effect is good. Lamu was promoted to the "enrollee"
master gives a letter to LAN mu, asking her to send it to the elders of the "aboriginal tribes" in the southwest. He will tell some interesting stories. This time, the topic is listening to stories, and the deadline is 24 days. LAN Mu finds the elder. After receiving the letter, the elder tells a story, which is the story of the kingdom of fir and orange and Princess Amelia in LAN Mu's family. But the end of the story can only be known by the Western magician Jia Shitong. The elder wrote a letter to ask LAN Mu to bring it to Jia Shitong
go to the west mountain and the windy terrace again and meet Jia Shitong. It turns out that the princess and the castle were frozen in ice and snow by a magician, and the magician and his disciples died. No one can undo this spell. To enter the city, there must be a "proof of entourage", but the magician can't use it. After 100 years, no one can get in. But Lanmu is not a magician, can't he go in. LAN Mu came back to tell his master that with his consent, he got Jia Shitong's "proof of entourage" and set out for ice city
to get to the ice city, you have to go from the caves. There are four entrances to the outside world. If you enter from "in front of the mole's cave", you need to give the mole earthworms to get in (earthworms can be caught by the pond of "Oriental thorn forest"). There are no earthworms to bypass from another entrance. Arrive at the entrance of the ice city, show the two red guards the certificate of the entourage, and enter the castle smoothly. Unexpectedly, he encountered a group of wild boars. Lanmu uses the wind blade magic to destroy the wild boars, and comes to the princess's room, which is locked by the magician. After listening to the tragic experience of the princess, Lanmu is determined to save her
there is an ice box on the left side of the ice city, which is left by the evil magician. LAN Mu opens it and sees five flying dragons flying out of it. At this time, master's voice rings in the air: "go home!" Lanmu went home immediately
after coming back, master told the story of the kingdom of fir and orange. It turns out that the kingdom of fir and orange was established by foreign races. 20 years before the fall of the Kingdom, the prince of fir and orange had a wedding with a girl from Xingfeng tribe. Two red and blue balls appeared at the wedding,
it was a gift from Xingfeng tribe and had a powerful seal effect. It was used to seal the magic ability of the children born after the prince. Because all people in Xingfeng tribe have magic power, they don't want this magic power to be obtained by outsiders. Princess Amelia is the prince's child. Maybe these two balls can unlock the magic of ice city and Princess Room. After understanding these situations, Lamu rose from the sixth level "Apprentice" to the seventh level "Explorer"
I learned from Jia Shitong that the blue ball and the red ball would be given to the spirit of "the resting spring of the Western Canyon" and the mole of "mole cave" respectively. Lanmu went to find mole. There was a mole named paigong in the mole hole. He lost an old helmet and was in a bad mood. No one could be seen. Blue Mu had to go to the "cabin in the forest" of the small pool to find the old helmet, with it in exchange for a red ball. Basketball is easy to get. With these two balls, LAN Mu learned how to use them from Jia Shitong and went home to report to his master. Lamu was also promoted to the eighth level of "junior magician"
after opening the ice box of ice city, LAN Mu gets the key and the letter. With the key to open the door of the princess's room, see the princess a person closed in the room, and was applied to prohibit the magic can't go. LAN Mu went to consult Jia Shitong again. He asked Lanmu to find the materials for the deployment of "spell solving magic". We can find the nine pagoda leaves from the "Eastern grassland zone", the tawny fruits from the "Southern thorn forest", and the strengthened tentacles from the foot of the big tree behind the "magician's home". These materials were given to Jia Shitong to make "Jiefu magic", which was used to solve the curse on the princess and make her free
after returning home, LAN Mu has been promoted to the Ninth level, namely "senior magician". The last topic is to find three jewels and ask Miss Yanlu to admit that Lanmu is an official magician. Baozhu wants to find clues from the people he knows. Find Jia Shitong, but have to "make bread" and "paralysis magic" to tell her the whereabouts of the Pearl. After LAN Mu came back, he stewed the dense flowers and fruits found in the "quiet forest of Wanghai", barbecued the hollow roots found in the "collapsed broken rock", and ground the brown fruits found in the "Oriental thorn forest". He learned to "paralyze magic" and showed Jia Shitong these two kinds of magic to get the yellow star Pearl
in Princess Amelia, there should be "fire magic" and "becoming a bear magic". Fire magic is to roast the trumpet mushroom of "Purple forest", dry the bat tooth of "mole cave", grind the purple round mushroom and orange thread tea mushroom of "northern cave of deep forest"“ To turn into bear magic, we need to barbecue the pink coral of "the long beach in the South", grind the green spiny snail of "the quiet South China Sea", and dry the orange tree melon of "the thorn forest in the East". Show Princess Amelia these two kinds of magic and get the purple star Pearl
finally, I got the blue star Pearl from my master. Take the three jewels to miss Yanlu and finally become an official magician
the story of Pei Ling
Pei Ling followed her master from childhood. On this day, the master asked Pei Ling to learn the magic of "making raisins". This was the first lesson Pei Ling had to learn. In the "Southern thorn forest" to find a single branch of flowers, it will be ground; Pink spinel ore was found in the mole cave of "Oriental thorn forest" and dried in the sun. That's it. It's a easy step up
the next lesson is to learn how to mix the magic of becoming a pumpkin. The magic is recorded in the sexy photo album on the library shelf. Pei Ling stewed pumpkin fruit found in "Oriental thorn forest"; Grind up the vortex roots found in the "cabin in the forest"; Barbecue the purple red flowers found in front of the mole cave. Finish the task
the third topic is to find the book with "fire magic" in the library and learn it to more than 50% of the learning degree“ "Fire magic" is recorded in the picture book with the red cover. Find it out and learn it
next, master asked Pei Ling to study "explore spiritual material magic" and learn it without any hint. This magic can be found in the travel album. Stew the colorful roots found in the "Western Canyon resting spring"; Barbecue butterfly wings found in the "Western River Beach"; Grind the green fruits found in the "Oriental grassland zone". After the deployment, show it to the master, and the project is completed. This time, master didn't give the next topic to Pei Ling immediately. She just said to wait for a while
Pei Ling has been with her master since she was a child, but she still remembers that her mother is a magician like her master, and her father is an explorer, but they don't know where they are now. Little Peiling missed her family very much, so she went to the master's room to ask about their whereabouts. I didn't expect that the next topic would be "I want to do it myself" - give myself a goal and work hard for it. The master told her that her mother died of illness and her father's whereabouts were unknown, but her mother left her a ring. The topic of this time is "to sweep my mother's tomb", and the location is the remote "Wanghai cliff in the northwest". You can walk up from the "beach stretching to the cliff". Mother's grave, which had not been cleaned for a long time, was covered with marmots. Little Peiling can't attack magic yet. She goes home and asks her master. Master said that we can use the "fire magic" we learned before and turn it into advanced magic to solve this problem. After learning "fire magic", Pei Ling used it to annihilate the marmots and presented a yellow bouquet in front of her mother's tomb
Pei Ling, who has lost her mother since childhood, is more and more yearning for her mother. Please help her find a way. The master sympathizes with Pei Ling's life experience and agrees to make "psychic magic" for her, but the magic materials have to be found by Pei Ling herself. The three materials are wanggu, lvkuang and heiyanhua. Zhiwanggu is in the "northern cave of deep forest", Lv mine is in the cave, and black eye is in the "small forest of Beihai"
after getting "psychic magic", little Peiling came to the "cabin in the forest" where she used to live and used psychic magic to see her mother. Unexpectedly, she learned from her mother that Peiling's master was her mother's father and Peiling's grandfather. Her mother also said that Pei Ling's father was still alive and disappeared in search of the century tree in the legendary Valley "Xiagang mountain". It is said that the leaves of the century tree can cure many diseases. Her father disappeared to help people. It's time for mother and daughter to meet. Pei Ling is determined to find her father
the entrance of the legendary Valley is behind the waterfall of the "Western River bank". The bats in the cave are not easy to be provoked. Push the stone in the upper left corner to get to the legendary Xiagang valley. Go straight ahead into the entrance of the valley, and the cave will collapse. Go back to the original place and walk again. But because of misfortune

8. Talking about "how to improve the calculation ability of the third grade students"

[Abstract] the calculation ability is a basic mathematical ability, including the calculation accuracy and accuracy, which is an important basis for learning mathematics and other subjects. Among them, the third grade learning integer multiplication and division method is the basis of learning decimal multiplication and division method and fractional multiplication and division method in the future, so the learning of integer multiplication and division method is particularly important. It's a pity that the situation reflected by the calculation of the third grade students in the actual learning is very worrying. Careless and careless in calculation, not forming good study habits, low accuracy rate of calculation and so on. This paper will discuss how to improve the calculation ability of the third grade students from the aspects of the importance of calculation teaching, the causes of students' calculation errors and the strategies to improve the calculation ability
[Key words] computing power; Improve the quality of service; Algorithm and theory; Learning habits
first, the importance of computing teaching
number and calculation is the most widely used mathematical knowledge in people's daily life. It has always been the basic content of primary school mathematics teaching, and cultivating primary school students' mathematical calculation ability has always been one of the main purposes of primary school mathematics teaching. Mathematical computing ability is a basic mathematical ability, including the accuracy and accuracy of calculation. It is an important basis for learning mathematics and other disciplines. Calculation accounts for a large proportion in primary school mathematics textbooks, and the level of students' calculation ability directly affects the quality of students' learning. Among them, the third grade learning integer multiplication and division method is the basis of learning decimal multiplication and division method and fractional multiplication and division method in the future, so how to improve the calculation ability of the third grade students is particularly important< Second, the current situation of students
however, the situation reflected by the calculation of our third grade students in the actual learning is very worrying. Some students are not interested in calculation, and their calculation level is low. Moreover, e to calculation errors, some students' mathematics performance is poor, and they lose interest in learning mathematics
Third, investigation and analysis of the causes of errors
1
calculation is the premise and basis of correct operation. If the calculation is clear in students' mind, the calculation will be orderly. Therefore, the algorithm and calculation theory must be explained clearly in teaching. For the new calculation, let students talk about what the first step is, what the next step is, what should be paid attention to in the calculation, and so on. Let students understand the algorithm and calculation theory through doing and speaking. 2. The calculation is careless and careless, and has not formed a good habit of calculation
most of the errors in students' calculation are caused by bad habits such as carelessness, carelessness and scribble. Generally speaking, students make the following mistakes in calculation:
(1) reading wrong, ing wrong, writing scribble. 6 and 0, 1 and 7 are ambiguous 2) When the column is vertical, the digits are not aligned 3) Do not make a draft when calculating
(4) errors in addition and subtraction of two or three digits lead to errors in the whole question 5) I don't concentrate on my homework 6) Part of the students are not serious enough, do math problems read-only once, began to calculate, finished also did not seriously check
therefore, mathematics teaching should cultivate students' study habits, such as serious and careful homework, neat writing, format conforming to the regulations, and conscious checking of calculation results. Therefore, the teacher's board performance in teaching, including the writing of numbers, the use of a ruler to draw horizontal lines, etc., and correcting the handwriting and symbols of homework, should be standardized and neat, so as to play a subtle demonstration role for students. 3. The importance of oral arithmetic is not enough
in the homework, it is often found that students do oral arithmetic as written arithmetic, are used to accurate calculation, and are not willing to do oral arithmetic. In the calculation of carry multiplication, the wrong number will be added, which shows that the students' ability of oral arithmetic is poor, so they should strengthen the practice of oral arithmetic< Fourth, strategies to improve the third grade students' computing ability
by analyzing the mathematics test questions of grade three in primary school, it is found that more than 80% of the questions involving calculation content are in one test paper. Therefore, improving the accuracy of calculation is a very important condition to get high scores in the exam. How to make students calculate correctly, quickly, flexibly and reasonably? We can start from the following points:
1. Strengthen students' mastery of algorithm and calculation theory
in order to make students know how to calculate, we must first make students know how to calculate, that is, strengthen the understanding of the rules and calculation theory. In teaching, teachers should guide students to master the calculation method with clear theory, clarify and master the calculation method, operation nature, operation law and derivation method of calculation formula, so as to cultivate students' consciousness of simple calculation. For example: teaching the vertical calculation of one digit multiplication, division of two or three digits can let students talk about what the first step is, what the next step is, what should be paid attention to in the calculation, etc. Let students understand the algorithm and calculation theory by doing and saying. 2. Strengthen students' training of oral arithmetic
the teaching content of oral arithmetic in primary school can be roughly divided into basic oral arithmetic and simple quick arithmetic. Basic oral arithmetic as the basis of written arithmetic. For example: the addition and subtraction within 20, table multiplication and corresponding division, require students to be accurate and skilled, blurt out. The content of simple and quick calculation is mainly the simple and quick calculation by using the operation law, properties and some special rules and methods. Do more "a" × B+C=” For example, 6 × 7 + 3 = 45), which can effectively improve the speed and accuracy of multiplication and carry calculation, and rece the problem of "only forgetting to add carry numbers" in the calculation of carry multiplication
in order to improve pupils' oral arithmetic ability and form certain oral arithmetic skills, the key is to persist in training. Teachers can arrange 2-3 minutes for oral arithmetic training before each class according to the teaching content, or organically infiltrate oral arithmetic training according to the actual situation of teaching, or ask parents to cooperate with such oral arithmetic training
3. Strengthen the cultivation of students' good study habits
to cultivate students' meticulous, serious and responsible learning attitude and develop good learning habits are the main ways and measures to prevent calculation errors and improve calculation level
(1) cultivate the habit of serious examination. The students are required to proofread the copied topics carefully, ranging from numbers and symbols, so as to make sure they are good. We often find that in the students' homework, especially the lower grade students, there is a phenomenon of missing or wrong ing. When examining the questions, we need to do one look, two think, three calculate and four check
"a look" is to see the numbers and operation symbols in the questions clearly. There are three points to be done: 1. Check with the original question after ing the question; ② Check the numbers on the vertical type with those on the horizontal type; ③ Check the number in horizontal form with that in vertical form“ The second thought is to figure out where to use oral calculation, where to use written calculation, and whether to use simple calculation
"three calculations" means taking notes seriously
"four checks" means careful inspection. After the calculation, we should first check whether the calculation method is reasonable; Secondly, check whether the numbers and symbols are copied wrong, and whether the decimal point is written wrongly or omitted; Thirdly, check and calculate every number and final result in the middle of calculation. (2) cultivate the habit of careful calculation. In the four operations, it is necessary to train students' calm and calm learning attitude. When encountering the calculation questions with large numbers and many steps, we should be not anxious, not dry, calm thinking and patient calculation. Even if it is a simple calculation problem, we should be careful and not act rashly. If you can do it orally, you should do it in writing. When calculating, the writing should be neat, the format should be standard and the method should be reasonable< (3) cultivate the habit of careful examination. It is impossible for students to make no mistakes in their calculations. Teachers should ecate students to form the habit of checking calculus after calculation, and regard examination as an indispensable part of calculation. During the inspection, we should be patient and careful, and check step by step: first, check whether the number in the title is copied wrong; second, check whether the calculation process and results are wrong, and correct the mistakes in time. 4. Practice extension
practice is an important way for students to consolidate knowledge and form skills. Calculation practice needs to combine the old with the new, elaborate and skillful. It should be in various forms and persevere. The improvement of students' computing level can not be achieved overnight, so it is necessary to strengthen the usual training. In order to improve students' calculation ability, we can arrange "practice every day", that is, practice 3-5 calculation questions every day, so that students can "review the old and learn the new". In short, it is a long-term and complex teaching process to cultivate students' mathematical computing ability, and it is not a matter of overnight to improve students' mathematical computing ability. As the saying goes, if you want to develop a good ability, you must "keep your fists on your hands, keep your tune on your tongue", and so is the cultivation of good computing ability. It is a cumulative process, only the joint efforts of teachers and students can be effective.