Mathematical handwritten newspaper materials

1 million is foolproof

7 points +8 points =1 yuan's daughter is precious for a moment

9 inches push your luck

12=1×1×1 thousand ways

1× 1 ever-changing

15 points = 5 upside down

333355555 groups

999: 999 are neck and neck. 1. There are five girls sitting side by side in the subway car. A sits at exactly the same distance from B and C, D sits at exactly the same distance from A and C, and E sits between her relatives and friends. Who are E's relatives and friends? Answer: E sits between A and B, and A and B are her relatives and friends. 2. There are 692 infantrymen in a fortress, and every four people stand in a horizontal row, and each row is 1 meter apart and walks forward, and 1 walks 86 meters per minute. Now we have to cross the 86-meter-long bridge. How many minutes does it take from the first row to the last row? Answer: 3 minutes. 3. A farmer keeps 9 sheep, 7 pigs and 5 cows. On the price, two sheep can be exchanged for a pig, and five sheep can be exchanged for a cow. He wants to give these cows, sheep and pigs to his three sons. Not only will no one get the same number of livestock, but they will also have the same value. Can you come up with a distribution plan? Answer: The eldest son is divided into one cow, five pigs and one sheep. The second son is divided into 2 cows, 1 pig and 4 sheep; The third son is divided into 2 cows, 1 pig and 4 sheep. The distance between the two cars is 15 meters. Suppose that the car in front is moving at a speed of 9km/h and the car behind is chasing at a speed of 144km/h, how far apart are the two cars in one second when they collide? Answer: 15 meters apart. 5. There are two companies, A and B, recruiting managers. Company A's annual salary is 1, yuan, and there is no annual salary increase of 2, yuan each time; Company B has a salary of 5, yuan for half a year, with a salary increase of 5, yuan every six months. Ask which company to earn more salary? Answer: Go to Company B to earn more salary. 6. lomonosov, a famous Russian mathematician, borrowed the book Mathematical Principles from his neighbor. The neighbor said to him, "If you help me chop firewood for 1 days, I will give you the book and give you 2 rubles." As a result, he only chopped firewood for 7 days. After the neighbor gave him the book, he paid another five rubles. How much is the price of the book Principles of Mathematics? Answer: The price of the book is 3 rubles. 7. The bottle contains 1 grams of alcohol with a concentration of 15%. Now, 1 grams and 4 grams of alcohol A and B are poured into the bottle respectively, and the concentration of alcohol in the bottle becomes 14%. It is known that the concentration of alcohol A is twice that of alcohol B. What is the concentration of alcohol A? Answer: 2% of the stories of the mathematician Gauss when he was a child < P > From one to one hundred < P > Gauss has many interesting stories. The first-hand information of the stories often comes from Gauss himself, because he always likes to talk about what happened after his childhood in his later years. We may doubt the truth of the stories, but many people have confirmed the stories he talked about.

Gauss's father is the foreman of the tile factory, and he always pays the workers every Saturday. In the summer when Gauss was three years old, once when he was about to get paid, Little Gauss stood up and said, "Dad, you are mistaken. "Then he said another number. It turned out that three-year-old Gauss was lying on the floor, secretly following his father to calculate who to pay. The result of recalculation proved that little Gauss was right, which stunned the adults standing there.

Gauss often said with a smile that he had learned to calculate before he learned to speak, and he often said that he learned to read books by himself after asking adults how to pronounce letters.

at the age of seven, gauss entered St. Catherine primary school. At about the age of ten, the teacher had a difficult problem in the arithmetic class: "Write down the integers from 1 to 1, and then add them up!"! Whenever there is an exam, they have the following habit: the first one who finishes it puts the slate face down on the teacher's desk, and the second one puts the slate on the first slate, thus falling one by one. Of course, this problem is not difficult for people who have studied arithmetic series, but these children have just begun to learn arithmetic! The teacher thought he could have a rest. But he was wrong, because in less than a few seconds, Gauss had put the slate on the lecture table and said, "Here's the answer! The other students added up the numbers one by one, and their foreheads sweated, but Gauss sat quietly, paying no attention to the contemptuous and suspicious eyes cast by the teacher. After the exam, the teacher examined the slate one by one. Most of them were wrong, so the students got a whipping. Finally, Gauss's slate was turned over and there was only one number on it: 55 (needless to say, this is the correct answer. ) The teacher was taken aback, and Gauss explained how he found the answer: 1+1 = 11, 2+99 = 11, 3+98 = 11, ..., 49+52 = 11, 5+51 = 11, one * * has 5 pairs and the number is 11. It can be seen that Gauss found the symmetry of arithmetic series, and then put the numbers together in pairs, just like the process of finding the sum of general arithmetic series. The story of mathematician Gauss

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 younger brother, the uncle Gauss, who takes good care of Gao Si 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 at an early age. At the age of three, he could point out the mistakes in his father's books. When I was seven years old, I entered a primary school and attended classes in a dilapidated classroom. The teacher was not good to the students, and often thought that teaching in the hinterland was a talent. When Gauss was ten years old, his teacher took the famous test "From one to one hundred" and finally discovered Gauss's talent. Knowing that his ability was not enough to teach Gauss, he bought a deep math book from Hamburg for Gauss to read. At the same time, Gauss became familiar with Bartels, a teaching assistant who was almost ten years older than him, and Bartels' ability was much higher than that of the teacher. Later, he became a university professor and taught Gauss more and deeper mathematics.

Teachers and teaching assistants went to visit Gauss's father and asked him to give him a 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 was-to find rich and powerful people as his patrons, although they didn't know where to find them. After this visit, Gauss got rid of weaving every night and discussed mathematics with Bartels every day, but soon Bartels had nothing to teach Gauss.

In p>1788, Gauss entered an institution of higher learning despite his father's objection. After reading Gauss's homework, the math teacher told him not to take any more math classes, and his Latin soon overtook the whole class. The anecdote of mathematician Hua Luogeng when he was a child

Hua Luogeng (191-1982) was born in Jintan County, Taihu Lake, Jiangsu Province. He was named Luo Geng because he was put in the laundry list by his father Hua Laoxiang when he was born for good luck.

Hua Luogeng was fond of playing since he was a child, and he also liked to join in the fun, but his lessons were mediocre and sometimes he failed. After barely finishing primary school, I entered Jintan Middle School in my hometown, but I was still playful, and my handwriting was crooked. When I did my math homework, I drew carefully, but it was like graffiti. Therefore, Hua Luogeng in junior high school was still not liked by teachers and was often ruled.

Wang Weike, a teacher in Jintan Middle School, has a unique eye. He studied Hua Luogeng's graffiti book and found that these many altered places reflect the various ways he explored when solving problems. Once, Teacher Wang Weike told his students [Sun Tzu's Calculations] that there is such a question: "Today, things are unknown, and the number of three and three is the second, the number of five and five is the third, and the number of seven and seven is the second. What is the geometry of things? "While everyone was silent, a student stood up. When everyone saw it, it turned out that Hua Luogeng was always looked down upon. At that time, he was only fourteen years old. Can you guess how much Hua Luogeng said? Chen Jingrun: When I was a child, my professor gave me a pearl

More than p>2 years ago, a reportage "Goldbach Conjecture", which caused a sensation in China, made a mathematical wizard become a household name overnight. To a certain extent, this man's deeds even promoted the early arrival of a great era of respecting science, knowledge and talents. His name is Chen Jingrun.

Not talkative, he used to be an "ugly duckling". Usually, a congenital deaf person's eyes will be particularly sharp, a congenital blind person's hearing will be very sharp, and an "ugly duckling" figure who has been ignored and unpopular since childhood will often meditate in spite of himself or in all kinds of helplessness, explore things, learn from things, and seek a suitable position among all things in the world to develop his potential. You can say that this is forced, but such a "force" often "forces" many great men out. For example, Chen Jingrun in childhood. Chen Jingrun was born in the family of a post office clerk in 1933. He just turned 4 and started his career in War of Resistance against Japanese Aggression. Soon, the Japanese invaders' wolf smoke burned to his hometown of Fujian, and the whole family fled into the mountains in a hurry, and the children entered the mountain schools. Fathers are too busy to make a living to take care of their children's education; My mother was an old housewife who worked hard all her life. She had 12 children, but only 6 survived. Chen Jingrun is the third, with elder brothers and sisters, and younger siblings. According to the old saying of China, "a little boy in the middle is flat-headed", and he is thin and weak, so it is conceivable that he is not happy with his parents and treated well by his brothers and sisters. At school, he was not much better off because he was taciturn and taciturn. Unpopular, bullied, and constantly beaten and scolded for no reason. It happened that he was stubborn by nature and never begged for forgiveness in order to improve his situation. Unconsciously, he formed a self-enclosed introverted personality. People always need to communicate, especially children. A gifted child may turn into an awkward person in the face of this dilemma, but Chen Jingrun didn't. His natural passion for numbers and symbols made him forget the hardships and troubles of life and concentrate on the pagoda of knowledge. He wanted to find a breakthrough and find happiness in life there. Teaching students in accordance with their aptitude is to create a space for each student to fully develop according to his own characteristics through certain educational and teaching methods and means.

Little Chen Jingrun teaches himself in accordance with his aptitude.

Fortunately, a primary school student met a professor, but he was still a child. In addition to burying his head in a book, he also needs face-to-face and hand-in-hand guidance. After all, what can bring the greatest, most direct and liveliest inspiration and joy to children is the kind of communication and contact between people, which can make people burst into brilliant sparks in their hearts. Fortunately, later, when his family returned to Fuzhou, Chen Jingrun met Shen Yuan, a famous teacher who claimed to be a lifelong beneficiary.

Shen Yuan is a famous aerodynamicist in China, an aviation engineering educator and a leading figure in the aviation industry in China. He was a Ph.D. graduate from Imperial College London, University of London, and the head of Tsinghua University Aviation Department. In 1948, he returned to Fuzhou to take care of family affairs. During the war, he had to stay in Yinghua Middle School, his alma mater in Fuzhou, to teach temporarily, and Chen Jingrun was the student in the class where he taught.

Famous university professors teach young children, and they have their own unique and extraordinary tricks. In view of the age and psychological characteristics of the teaching object, Shen Yuan often introduces the explanation of the title in a simple way by telling stories in combination with the teaching content, which easily lures those young children into the superb scientific world and arouses their great enthusiasm for science and learning. For example, on this day, Professor Shen Yuan told the students a story about Goldbach's conjecture with great interest.

The teacher's legacy of "beads" illuminates the future of young people's struggle

"As we all know, in positive integers, 2, 4, 6, 8, 1 ..., these numbers that can be divisible by 2 are called even numbers; 1, 3, 5, 7, 9, etc., are called odd numbers. There is also a number that can only be divisible by 1 and themselves, but not by other integers. This number is called a prime number. "

As usual, in the whole classroom, even the sound of an embroidery needle falling to the ground can be heard in silence, and only Professor Shen's calm and rich voice echoes.

"More than 2 years ago, a German middle school teacher named Goldbach discovered that every even number not less than 6 is the sum of two prime numbers. For example, 6=3+3, 12=5+7, 18=7+11, 24=11+13 ... Over and over again, Goldbach successfully tested many even numbers, thus guessing that every big even number can be written as the sum of two prime numbers. " Professor Shen said here, there was a commotion in the classroom, and interesting math stories have aroused great interest of children.

"However, conjecture is conjecture after all. Without rigorous scientific proof, it will always be conjecture." Now it was Chen Jingrun Jr.' s turn to make a commotion. But in my heart.

how to demonstrate scientifically? Can I grow up? He thought. Later, Goldbach wrote a letter to the famous mathematician Euler at that time. Euler received the letter with great enthusiasm, and almost immediately threw himself into this interesting argument. However, it's a pity that, despite Euler's painstaking efforts, he failed to prove this conjecture until his death. Since then, Goldbach's conjecture has become a world-famous mathematical problem. For more than 2 years, it has made many talented scholars and heroes in the field of mathematics advance wave after wave and compete with each other. The classroom is already boiling, and the children's curiosity and imagination are all mobilized.

"Mathematics is the queen of natural science, and the crown on this queen's head is number theory. The Goldbach conjecture I just mentioned is a dazzling pearl in the queen's crown!"

Shen Yuan finished the story about Goldbach's conjecture in one go. The students talked about it in succession, and it was very lively, but the introverted Chen Jingrun didn't say a word, and the whole person was "crazy". This quiet, quiet and thoughtful child was completely brought into a colorful magical world by Shen Yuan's story. While other students were wowing at him, it would be over, but he kept telling himself over and over again:

"Can you do it? Can you take off this jewel in the crown of mathematics? "

One is a university professor and the other is a child with yellow mouth. Although there was no communication or even conversation between them in the strict sense, this class was really a heart-to-heart meeting, because it laid a foundation for Chen Jingrun Jr.' s beautiful ideal, a goal to strive for and made him willing to fight for it all his life! Many years later, Chen Jingrun graduated from Xiamen University. A few years later, he was recognized by the famous mathematician Hua Luogeng and transferred to the Institute of Mathematics of China Academy of Sciences. Since then, under the leadership of Hua Luogeng, Chen Jingrun has devoted himself to the long and outstanding demonstration of Goldbach's conjecture day and night.

In p>1966, a dazzling new star rose in the field of mathematics in China, with Chen Jingrun in China.