Making some interesting mathematical manuscripts can expand students' extracurricular knowledge. Here are some interesting primary school mathematics manuscripts. Welcome to read!
Primary school mathematics interesting handwritten newspaper material article 1 1, where is the dollar?
Three people stayed in a hotel, and the price per person per day was 10 yuan. Everyone paid 10 yuan, and the total was the boss 30 yuan. Later, the boss gave a discount of 5 yuan and asked the waiter to return it to them. As a result, the waiter was greedy for 2 yuan, and the remaining 3 yuan was refunded by everyone 1 yuan, which means that everyone spent 9 yuan. The total consumption of three people is * * * in 27 yuan, and the waiter is greedy for 2 yuan and 29 yuan. Where did the dollar go?
Step 2 divide the apples
There are five students in Xiaomi's family Xiaomi's father wants to entertain six children with apples, but there are only five apples at home. What shall we do? I have to cut the apple, but I can't cut it into pieces. Xiaomi's father wants each apple to be cut into three pieces at most. This has become another topic: divide five apples equally among six children, and each apple is not allowed to be cut into more than three pieces. How did Xiaomi's father do it?
3. Little Tiger counts chickens
During the Spring Festival, Xiao Mahu, a professional chicken farmer, stood in the yard, counted the total number of chickens, and decided to stay and give them to the People's Liberation Army 1/2 and the nursing home 1/3. After he sent the chickens away, he heard the chickens crowing in the room, only to know that there were 10 chickens missing. So I counted the chickens inside and outside the room again, and there was nothing wrong, no more, no less, just 1/2 left. Little careless and strange. What's the problem? Do you know how many chickens Xiao Mahu counted in the yard?
4. How many guests are there here?
One day, Xiao Lin was washing dishes at home. Xiao Qiang saw it and asked, "Why do you wash so many bowls?" "There are guests at home." "How many people came?" Kobayashi said, "I don't know. I only know that each of them uses a rice bowl, two people share a soup bowl, three people share a vegetable bowl, four people share a big wine bowl, and one * * * uses 15 bowl. " Do you know how many guests have come?
Mathematician-Lagrange
Lagrange (1736— 18 13) is a famous French mathematician, mechanic and astronomer, a pioneer of variational method and the founder of analytical mechanics. 18th century is known as "the greatest hope in Europe and the greatest mathematician in Europe".
Lagrange was born in Turin, Italy. As the eldest son, his father wants him to study law. However, Lagrange has no interest in law and loves literature.
Until 16 years old, Lagrange was still very partial to literature and had no interest in mathematics. /kloc-when he was 0/6 years old, he accidentally read an article introducing Newton's calculus, discussing the advantages of analytical methods, which aroused his infinite admiration and admiration for Newton, so he made up his mind to become a Newton mathematician.
After entering the Royal Artillery Academy in Turin, Lagrange began to teach himself mathematics in a planned way. Thanks to his hard work, he made rapid progress and began to teach mathematics in this school before graduation. At the age of 20, he was officially appointed as an associate professor of mathematics in the school. From this year on, Lagrange began to study the problem of "minimax". He adopted the method of pure analysis. 1758 In August, he wrote to Euler about his research method, and Euler spoke highly of it. From then on, the two masters began to communicate frequently, and in this process, a new branch of mathematics-variational method was born.
1759, on the recommendation of Euler, Lagrange was nominated as a member of the Communication Academy of Berlin. Then, he was elected as a foreign academician of the Academy.
1762, the French Academy of Sciences offered a reward to solve the problem of why the moon rotates and always faces the earth with the same face when it rotates. Lagrange wrote an excellent paper, successfully solved this problem and won the Academy Award. Therefore, the name of Lagrange spread all over Europe and attracted the attention of the world. Two years later, the French Academy of Sciences put forward the so-called "six-body problem" of the perturbation problem between Jupiter's four satellites and the sun. Faced with this problem, Lagrange is fearless. After several sleepless nights, he finally found the answer by approximate solution, thus winning the prize again. This award won him a world reputation.
1766, Lagrange succeeded Euler as the director of the Institute of Physical Mathematics of the Berlin Academy of Sciences. During his 20 years as director, Lagrange published many papers and won many awards from the French Academy of Sciences: 1722, and the paper "On the Three-body Problem" won the prize; 1773, his paper "On the Long-term Equation of the Moon" won another prize; 1779, Lagrange's paper "Studying the Perturbation Theory of Comets by Experiments of Planetary Activities" won the double prize.
During his work in Berlin Academy of Sciences, Lagrange made extensive and in-depth research on algebra, number theory, differential equations, variational methods and mechanics. One of his most valuable contributions is in the theory of equations. His book "Solving N-degree General Equation by Algebraic Operation (N >；; 4) The conclusion "No" can be said to be the basis for Galois to establish group theory.
Most notably, Lagrange completed the greatest classic work since Newton-On Indefinite Analysis. This book was written after 37 years of painstaking efforts. When it was published, he was over 50 years old. In this book, Lagrange wrote the universe into a rhythmic melody composed of numbers and equations, which developed dynamics to the peak and unified the two branches of solid mechanics and fluid mechanics. He established a beautiful and harmonious mechanical system by using the variational principle, which can be said to be the basis of the whole modern mechanics. Great scientist Hamilton praised this masterpiece as a "scientific poem".
18 13 April 10, Lagrange died of illness and completed his brilliant scientific journey. His rigorous scientific attitude and work style of striving for perfection affect every scientist. His academic achievements also provided rich nutrition for the growth of world famous mathematicians such as Gauss and Abel. It can be said that in the following 100 years, many important discoveries in mathematics were almost related to his research.
Interesting handwritten newspaper materials for primary school mathematics Part II Uncle Ruben and Aunt Cynthia went shopping in the city. Reuben bought a suit and a hat and spent 15 dollars. Cynthia bought a hat, and she spent as much money on clothes as Reuben did. Then she bought a new dress and spent all their money.
On the way home, Cynthia reminded Reuben that his hat was $65,438+0 more expensive than her clothes. Then she said, "If we arrange the money for buying a hat and buy another hat, then my hat cost twice as much as yours 1 and1/,then we both spend the same money." Uncle Reuben said, "In that case, how much is my hat worth?" Can you answer Reuben's question? And tell me: How much did the couple spend?
Answer:
(Let X represent the price of the hat that Uncle Ruben actually bought and Y represent the price of his clothes, then the price of the hat that Cynthia bought is also Y, and the price of his clothes is x- 1. We know that x+y is equal to $ 15, so if we divide their $ 15 into two parts, one part is the other. Using these data, the following equations can be listed:
9+x- 1=6+ 15-x .
From this, we can see that X is $6.50, which is the money Ruben spent on his hat. So the money he spent on clothes was $8.50. So I learned that Cynthia spent $8.50 on hats and $5.50 on clothes, and the total consumption was $29.
The third cool monkey: "It's so boring in heaven!" Let's go to the earth. "Sweet sand:" When we come to the earth, our magic will disappear. It is too dangerous! Shuai Shuai Pig: Without magic, we can't walk in clouds and fog. I am most afraid of walking long distances. I am so tired! "Cool monkey:" It's nothing strange to solve problems with magic. There is no magic, it depends on our intelligence. Shuai Shuai pigs are afraid to walk long distances. Now we are going to borrow Tianma from Yumajian. My master is an official there. As long as the owner's name is mentioned, I'm sure I can borrow a horse! "Three people came to the royal horse officer and saw the horse eating grass leisurely on the green grass. The cool monkey said, "Look! How strong the horses are here. They must be able to run a long way. "
Shuai Shuai Pig shouted: "The person in charge came out, and the Monkey King sent us to borrow horses!" I heard that the Monkey King sent someone to borrow a horse, and the Royal Horse Supervisor hurried out to meet him. He said to Shuai Shuai Pig: "It is reasonable to say that the horse in the sky is not borrowed, but the Great Sage wants to borrow a horse, so we have to borrow it, but we have to find an excuse."
The Imperial Horse Supervisor thought for a moment and said, "The grass in the Tiantang grassland is enough for 500 horses to eat for 80 days, or enough for 400 horses to eat 120 days. How many horses do you think can be raised in the Tiantang grassland at most? " The cool monkey said: "Because the grass in the grassland will grow back after eating, so this question has to be thought like this." Suppose a horse eats one share of grass a day, then 500 horses eat 40,000 shares in 80 days, and 400 horses eat 120 days, that is, 48,000 shares, then the new grass growing on the grassland every day is (48,000-40,000). Imperial horse listened and said happily, "Imperial horse supervisor has 203 horses. I'll lend you three horses, and there are just 200 left. Make sure that each horse is not hungry, so that I can have a confession to the Jade Emperor! "Cool monkey, Shuai Shuai pig and Xiangsha chose three best horses and went straight to earth!
;