Small knowledge of third-grade mathematics newspaper (content of third-grade mathematics handwritten newspaper for primary school students) 1. The content of the third grade mathematics handwritten newspaper for primary school students
The story of the mathematician Gauss 1777~ 1855 was born in Brunswick, located in the north-central part of Germany.
His grandfather is a farmer, his father is a mason, his mother is a mason's daughter, and he has a very clever brother, Uncle Gauss. He takes good care of Gauss and occasionally gives him some guidance, while his father can be said to be a "lout" who thinks that only strength can make money, and learning this kind of work is useless to the poor. Gauss showed great talent very early, and at the age of three, he could point out the mistakes in his father's book.
At the age of seven, I entered a primary school and took classes in a dilapidated classroom. Teachers are not good to students and often think that teaching in the backcountry is a talent. When Gauss was ten years old, his teacher took the famous "from one to one hundred" exam and finally discovered Gauss's talent. Knowing that his ability was not enough to teach Gauss, he bought a deep math book from Hamburg and showed it to Gauss.
At the same time, Gauss is familiar with bartels, a teaching assistant who is almost ten years older than him. bartels's ability is much higher than that of the teacher. Later, he became a university professor, giving Professor Gauss more and deeper mathematics. Teachers and teaching assistants went to visit Gauss's father and asked him to let Gauss receive higher education. But Gauss's father thought that his son should be a plasterer like him, and there was no money for Gauss to continue his studies. The final conclusion is-find a rich and powerful person to be his backer, although I don't know where to find it.
After this visit, Gauss got rid of weaving every night and discussed mathematics with Bater every day, but soon there was nothing to teach Gauss in Bater. 1788, Gauss entered higher education institutions despite his father's opposition.
After reading Gauss's homework, the math teacher told him not to take any more math classes, and his Latin soon surpassed the whole class. 179 1 year, Gauss finally found a patron-the Duke of Brunswick, and promised to help him as much as possible. Gauss's father had no reason to object.
The following year, Gauss entered Brunswick College. This year, Gauss was fifteen years old.
There, Gauss began to study advanced mathematics. Independent discovery of the general form of binomial theorem, quadratic reciprocity law in number theory, prime number theorem and arithmetic geometric average.
1795 gauss enters gottingen (g? Ttingen) university, because he is very talented in language and mathematics, so for some time he has been worried about whether to specialize in classical Chinese or mathematics in the future. At the age of 1796 and 17, Gauss got an extremely important result in the history of mathematics.
It was the theory and method of drawing regular heptagon ruler that made him embark on the road of mathematics.
2. Third-grade mathematics tabloid materials
Von Neumann, one of the most outstanding mathematicians in the 20th century. As we all know, the electronic computer invented by 1946 has greatly promoted the progress of science and technology and social life. In view of von Neumann's key role in the invention of electronic computers, he is called "the father of computers" by westerners. From 19 1 1 to 192 1, von Neumann got ahead when he was studying in Lu Se Lun Middle School in Budapest, and was highly valued by teachers. Under the individual guidance of Mr. Fichte, von Neumann published his first mathematical paper in cooperation.
Galois was born in a town not far from Paris. His father is the headmaster of the school and has served as mayor for many years. The influence of family makes Galois always brave and fearless. 1823, 12-year-old galois left his parents to study in Paris. Not content with boring classroom indoctrination, he went to find the most difficult mathematics original research by himself. Some teachers also helped him a lot. Teachers' evaluation of him is "only suitable for working in the frontier field of mathematics".
Archimedes was born in Syracuse, Sicily, at the southern tip of the Italian peninsula in 287 BC. Father is a mathematician and astronomer. Archimedes had a good family upbringing since childhood. 1 1 years old, was sent to study in Alexandria, the cultural center of Greece. In this famous city known as the "Capital of Wisdom", Archimedes Job collected books and learned a lot of knowledge, and became a protege of Euclid students erato Sese and Cannon, studying geometric elements.
Zu Chongzhi's outstanding achievement in mathematics is about the calculation of pi. Before the Qin and Han Dynasties, people used "the diameter of three weeks a week" as pi, which was called "Gubi". Later, it was found that the error of Gubi was too large, and the pi should be "the diameter of a circle is greater than the diameter of three weeks". However, there are different opinions on how much is left. Until the Three Kingdoms period, Liu Hui put forward a scientific method to calculate pi-"secant" which approximated the circumference of a circle with the circumference inscribed by a regular polygon. Liu Hui calculated the circle inscribed with a 96-sided polygon and got π=3. 14, and pointed out that the more sides inscribed with a regular polygon, the more accurate the π value obtained. On the basis of predecessors' achievements, Zu Chongzhi devoted himself to research and repeated calculations. It is found that π is between 3. 14 15926 and 3. 14 15927, and the approximate value in the form of π fraction is obtained as the reduction rate and density rate, where the six decimal places are 3. 14 1929. There's no way to check now. If he tries to find it according to Liu Hui's secant method, he must work out 16384 polygons inscribed in the circle. How much time and labor it takes! It is obvious that his perseverance and wisdom in academic research are admirable. It has been more than 1000 years since foreign mathematicians obtained the same result in the secrecy rate calculated by Zu Chongzhi. In order to commemorate Zu Chongzhi's outstanding contribution, some mathematicians abroad suggested that π = be called "ancestral rate".
Born in 624 BC, Ju Lushi was the first famous mathematician in ancient Greece. He used to be a shrewd businessman. After he accumulated considerable wealth by selling olive oil, Cyrus devoted himself to scientific research and travel. He is diligent and studious, at the same time, he is not superstitious about the ancients, and he is brave in exploration, creation and positive thinking. His hometown is not too far from Egypt, so he often travels to Egypt. There, Ju Lushi learned about the rich mathematical knowledge accumulated by ancient Egyptians for thousands of years. When he traveled in Egypt, he calculated the height of the pyramids in a clever way, which made the ancient Egyptian king Amerasis admire him very much.
Gauss is very clever. The teacher did an arithmetic problem in class and asked the students to calculate the sum of the first 100 natural numbers. The average student is confused one by one, but Gauss worked out the answer almost without thinking. He noticed the law of arithmetic progression,100+1=10/,99+2 = 10 1...* * 50 logarithm, and the answer was 5050.
That's all.
3. The third grade mathematics handwritten newspaper, give more content.
Small knowledge of mathematics
* * * Numbers
In life, we often use the numbers 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. Do you know who invented these numbers?
These digital symbols were first invented by ancient Indians, and then spread to * * *, and then from * * * to Europe. Europeans mistakenly think that it was invented by * * * people, so it is called "* * * number". Because it has been circulating for many years, people still call them * * *.
Now, the number * * * has become a universal digital symbol all over the world.
multiplication table
Jiujiuge is the multiplication formula we use now.
As early as the Spring and Autumn Period and the Warring States Period BC, Jiujiu songs have been widely used by people. In many works at that time, there were records about Jiujiu songs. The original 99 songs started from "99.8 1" to "22.24", with 36 sentences. Because it started with "998 1", it was named 99 Song. The expansion of Jiujiu Song to "One for One" was between the 5th century and10th century. It was in the 13 and 14 centuries that the order of Jiujiu songs became the same as it is now, from "one for one" to "9981".
At present, there are two kinds of multiplication formulas used in China. One is a 45-sentence formula, usually called "Xiao Jiujiu"; There is also a sentence 8 1, which is usually called "Big Uncle Nine".
Mathematical short stories
Digital Entertainment Association
When Su Dongpo, a great poet in Song Dynasty, was young, he went to Beijing with several schoolmates to take the exam. When they arrived at the examination center, it was too late. The examiner said, "I made a couplet. If I get it right, I'll let you into the examination room." The examiner's couplet is: a boat alone, two or three students, four oars and five sails, crossing six beaches and seven bays, which is very late.
Su Dongpo's bottom line is: ten years of cold window, entering the 98 th Hospital, abandoning worldly desires, studying hard the Five Classics and Four Books, and taking the exam three times and two times. Today, he must succeed
Examiners and Su Dongpo both embedded the ten numbers from one to ten in couplets, vividly describing the hardships of scholars.
Wrong decimal point
Learning mathematics should not only solve problems correctly, but also make no mistakes in the specific problem-solving process.
An old woman living on a pension in Chicago, USA, went home after minor surgery in the hospital. Two weeks later, she received a bill from the hospital for $63,440. When she saw such a huge number, she couldn't help being surprised and fell to the ground and died. Later, someone checked with the hospital. As a result, the computer misplaced the decimal point, and actually only needed to pay $63.44.
A wrong decimal point will actually kill a person. As Newton said, "In mathematics, the smallest error can't be ignored.
When did 2 1 century begin?
Century is the unit for calculating age, and a hundred years is a century.
The start year and end year of the first century are 1 and 100 respectively. A common mistake is that some people regard the starting year as the year zero, which obviously does not conform to logic and our habits, because in general, the calculation of ordinal numbers starts from "1" instead of "0". It is this misunderstanding that led to the misunderstanding that the year at the end of the century was 99 AD, which is why 1999 was wrongly considered as the year at the end of the twentieth century and the year 2000 was the year at the beginning of the twenty-first century. Because the AD count is ordinal, it should start with "1", and the first year of 2 1 century is 20065433.
4. How to do the mathematics knowledge tabloid in Grade Three?
Interesting math problem 1. There are 10 red, yellow and blue balls of the same size and texture in the pocket.
Touch at least one ball at a time to ensure that at least four balls are the same color? 2. 1. The key to the classroom is lost. Three children, Xiaoxiao, Naughty and Qingqing, each said a word: Xiaoxiao said: I didn't lie. Naughty said: Xiaoxiao is lying.
Qing Qing said: Naughty and smiling are deceptive. Clever children, do you know which one of them must be lying? 3. A rectangular piece of paper with a length of 20 cm and a width of 16 cm, as shown in the figure, is placed according to the number of layers of 1, 2 and 3, and * * * is placed according to the number of layers of 100.
What is the circumference of the arranged figure? 4. There are 50 students going boating in the park, each big ship can take 6 people, and the rent is 10 yuan; Each boat can take four people and rent 8 yuan. So among many different chartering schemes, which one is the most economical? Five people, A, B, C, D and E, take part in the table tennis competition. Every two people have to play a game, and only one game can be played. It is stipulated that the winner gets 2 points and the loser gets none. The known results are as follows: (1)A and E are tied for the first place; (2)B is the third place; (3)C and D are tied for fourth place, so how many points does B get? 6. 15 students line up. From the left, Kobayashi is 1 1. From the right, Xiao Gang is the 10.
How many students are there between Xiao Lin and Xiao Gang? 7. Black hen lays 2 eggs per day 1 egg, white hen lays 2 eggs per day 1 egg, and two chickens lay 2 eggs per day 1 egg. How many days will it take at least? 8. A basket of radishes weighs 56 kilograms. Sell half the radish first, and then sell the remaining half. At this time, the basket weighs * * *17kg. How much does this basket of radishes weigh? How much does this basket weigh? 9. Xiao Qiang, Liang Xiao and Xiaojun practice basketball. A * * voted 150 times, * * * missed 64 times. As we all know, Xiao Qiang and Xiao Liangyi threw 48 balls, Liang Xiao and Jun Xiao threw 69 balls, and how many balls did Liang Xiao throw? 10, put 3, 6, 9, 12, 15, 18, 2 1, 24, 27 in the appropriate box, so that the sum of the three numbers on each horizontal, vertical and diagonal line will get 40.
1 1, there are 100 chickens and rabbits, and rabbits have 28 more feet than chickens. How many chickens and rabbits are there? 12, team a and team b, 96 people. If 8 people are transferred from team A to team B, and team B gives 36 people to team C, then the number of team A is twice that of team B. How many people were there in each team at that time? 13, how many times does the number "1" * * appear in1,2, 3, ..., 132? 14. There are three people in Xiaoming's family. My mother is two years younger than my father. The age of the whole family adds up to just 70 this year. Seven years ago, the age of the whole family added up to just 50. How old is everyone in Xiaoming's family now? 15, the school bought four basketballs and five footballs for the first time, and * * * used them in 520 yuan; I bought the same five basketballs and four footballs for the second time and spent 533 yuan.
What is the unit price of basketball and football? .
5. Third-grade mathematics tabloid materials
Von Neumann, one of the most outstanding mathematicians in the 20th century. As we all know, the electronic computer invented by 1946 has greatly promoted the progress of science and technology and social life. In view of von Neumann's key role in the invention of electronic computers, he is called "the father of computers" by westerners. From 19 1 1 to 192 1, von Neumann got ahead when he was studying in Lu Se Lun Middle School in Budapest, and was highly valued by teachers. Under the individual guidance of Mr. Fichte, von Neumann published his first mathematical paper in cooperation.
The influence of family makes Galois always brave and fearless. 1823, 12-year-old galois left his parents to study in Paris. Not content with boring classroom indoctrination, he went to find the most difficult mathematics original research by himself. Some teachers also helped him a lot.
Teachers' evaluation of him is "only suitable for working in the frontier field of mathematics". Archimedes was born in Syracuse, Sicily, at the southern tip of the Italian peninsula in 287 BC.
Father is a mathematician and astronomer. Archimedes had a good family upbringing since childhood. 1 1 years old, was sent to study in Alexandria, the cultural center of Greece.
In this famous city known as the "Capital of Wisdom", Archimedes Job collected books and learned a lot of knowledge, and became a protege of Euclid students erato Sese and Cannon, studying geometric elements. Zu Chongzhi's outstanding achievement in mathematics is about the calculation of pi. Before the Qin and Han Dynasties, people used "the diameter of three weeks a week" as pi, which was called "Gubi". Later, it was found that the error of Gubi was too large, and the pi should be "the diameter of a circle is greater than the diameter of three weeks". However, there are different opinions on how much is left. Until the Three Kingdoms period, Liu Hui put forward a scientific method to calculate pi-"secant" which approximated the circumference of a circle with the circumference inscribed by a regular polygon. Liu Hui calculated the circle inscribed with a 96-sided polygon and got π=3. 14, and pointed out that the more sides inscribed with a regular polygon, the more accurate the π value obtained. On the basis of predecessors' achievements, Zu Chongzhi devoted himself to research and repeated calculations. It is found that π is between 3. 14 15926 and 3. 14 15927, and the approximate value in the form of π fraction is obtained as the reduction rate and density rate, where the six decimal places are 3. 14 1929. There's no way to check now. If he tries to find it according to Liu Hui's secant method, he must work out 16384 polygons inscribed in the circle. How much time and labor it takes! It can be seen that his tenacious perseverance and intelligence in academic research are admirable. Foreign mathematicians have obtained the same result from Zu Chongzhi's calculation, which is more than 1000 years ago. In order to commemorate Zu Chongzhi's outstanding contribution, some mathematicians abroad suggested that π = be called "ancestral rate". Born in 624 BC, Ju Lushi was the first great mathematician in ancient Greece.
He used to be a shrewd businessman. After he accumulated considerable wealth by selling olive oil, Cyrus devoted himself to scientific research and travel. He is diligent and studious, at the same time, he is not superstitious about the ancients, and he is brave in exploration, creation and positive thinking.
His hometown is not too far from Egypt, so he often travels to Egypt. There, Ju Lushi learned about the rich mathematical knowledge accumulated by ancient Egyptians for thousands of years.
When he traveled in Egypt, he calculated the height of the pyramids in a clever way, which made the ancient Egyptian king Amerasis admire him very much. Gauss is very clever. The teacher did an arithmetic problem in class and asked the students to calculate the sum of the first 100 natural numbers. The average student is confused one by one, but Gauss worked out the answer almost without thinking.
He noticed the law of arithmetic progression,100+1=10/,99+2 = 10 1...* * 50 logarithm, and the answer was 5050. That's all.
6. How much do you know about math decimals in Grade Three?
Math diary who completed the decimal multiplication and division.
[Author: winter sunshine]
165438+1Sunday, October 25th
If you add an inconspicuous decimal point to the middle point of "123", it will become "1.23" or "12.3". If you add an inconspicuous decimal point to "456", it will also become "4.56" or "45.6" ... The decimal point is such a magical symbol that can make all numbers "tiny"!
Unit 7, we learned the multiplication and division of decimals, which made me feel deeply!
The first point: when the lines are vertical, the numbers should be aligned. When column multiplication is vertical, many students often mistakenly think that integers are aligned with integers and decimals are aligned with decimals. If you do that, it's all wet! The correct method should be this: No matter where the decimal point is, when the column is vertical, the ends of the two numbers must be aligned. Only the results and answers calculated in this way are correct!
The second point: Never point the decimal point in the process of vertical column. This is a common problem of many students. When you click the decimal point in the exam, you will be deducted, and you will regret it!
Number three: Be careful. Multiply a decimal by 10, 100, 1000 ... or divide a decimal by 10, 100, 1000 ... Never make a mistake about the position and direction of the decimal point!
Let's study math seriously! There are still many secrets waiting for us to explore in the kingdom of decimals!
Yu ruotong
165438+1Sunday, October 25th
Students find it difficult to talk about decimals. After learning the addition and subtraction of decimals, we have entered the learning hall of decimal multiplication and division, and have a new understanding of decimals.
To learn decimals, we should first understand several laws:
(1) When an integer is multiplied by a decimal below 1, the quotient becomes smaller, not larger;
(2) Multiplying a number by 0. 1 reduces the product by 10, multiplying the product by 0.0 1 reduces the product by 100, and so on;
(3) Don't mark the decimal point in the process of fractional division. After the quotient comes out, choose a suitable position to mark the decimal point;
(4) The quotient of a number (except 0) divided by 0.5 is twice that of this number.
Mastering the above four laws, decimal multiplication and division can be easily solved. Learn multiplication calculation first, multiply two decimals, count how many digits there are in these two decimals, and finally, put the decimal point in front. Multiplication is simple, but division is difficult? In fact, they are all the same, so it is not difficult to master the regular operation of fractional division.
After learning the above knowledge, let's expand it. The question is this: when Xiao careless calculates a decimal multiplication operation, the product of two numbers is 180, and one factor is 0 1, so what is the other factor?
Let's look at the previous formula again: when a number is multiplied by 0. 1, the product will be reduced by 10, and it will be180 ÷ 0.1=1800. How simple.
Learning decimal multiplication and division is really interesting.
7. Contents of Mathematical Manuscripts
1, an anecdote of a mathematician.
2. Interesting math problem, plan 3-5. 3. Ways to learn math well.
Interesting math story: When Gauss was in elementary school, once after the teacher taught addition, because the teacher wanted to have a rest, he came up with a topic for students to calculate. The title is: 1+2+3+. ..+97+98+99+ 100 = ? The teacher is thinking, now the children must start class! I used this as an excuse to go out, but Gauss stopped me! ! It turns out that Gauss has worked it out. Little friend, do you know how he did it? Gauss told everyone how he worked it out: add 1 to 100, add 100 to 1, and add two lines, that is 1+2+3+4+.
..+96+97+98+99+ 100 100+99+98+97+96+ 。 ..+4+3+2+ 1 = 10 1+ 10 1+ 10 1+ 。
... =' class1' >+10/+1+1+10 1 * * There are one hundred10/kloc-0 ... A rectangle, if its length is increased by 6 cm or its width is increased by 4 cm, its area will increase by 48 cm 2. What is the original area of this rectangle? If the length is increased by 6cm and the area is increased by 48cm2, the width is 48/6 = 8cm；; If the width is increased by 4cm and the area is increased by 48cm2, the length is 48/4 = 12cm, then the original area is 8 * 12 = 96cm2.
8. Summary of mathematics knowledge points in the third grade of primary school
Unit 1 measurement
1. In daily life, relatively few items can be used as units (millimeters, centimeters, decimeters); Large objects are usually measured in meters; Generally, the unit for measuring long distance is (km), also called (km).
2. There are (10) units in the length of 1 cm, and the length of each unit (equal) is (1) mm. ..
3. 1 The thickness of coins, rulers, magnetic cards, buttons and keys 1 min is about1mm..
4. When calculating the length, you can only add or subtract the same length unit.
Tip: When converting the length unit, change the large unit to the small unit and add 0 at the end of the number (if there are several 0s in the relationship, add several 0s); Changing a small unit to a large unit will remove the zeros at the end of the number (if there are several zeros in the relationship, remove several zeros).
5. The relationship between length units is as follows: (the propulsion rate between every two adjacent length units is 10).
① the advancing speed is 10: 1 m = 10 decimeter, 1 decimeter = 10 cm,10 mm,
10 decimeter = 1 meter,10cm = 1 decimeter,10mm = 1 cm,
② The advancing speed is 1 00:1m =100 cm,1decimeter = 100 mm, 100 cm = 1 m,/kloc-0.
③ The forward speed is1000:1km =1000 m,1km = 1000m = 1km.
When we express the weight of an object, we usually use (mass unit). In life, the weight of lighter items can be measured in grams. According to the quality of general goods, it is usually a unit (kg); Measure the mass of heavy or bulk goods, usually in tons.
Tip: in the conversion of "ton" and "kilogram", converting tons into kilograms means adding three zeros at the end of the number;
Converting kilograms into tons is to remove the three zeros at the end of the number.
7. The ratio of two adjacent mass units is 1000.
1 ton = 1 000kg/kg = 1 000g1000kg = 1 ton1000g =1thousands.