Interesting Mathematics I think mathematics is very interesting in our daily life.
For example, an interesting application problem, an interesting formula and an interesting solution ... This month, I saw the fun of mathematics with my own eyes. I remember one day this month, Mr. Wang, a math teacher, told us about exploration and discovery in class (1)-an interesting formula.
In this lesson, we broke through four levels in a row and all passed. The first level: wonderful pagoda. There are some interesting formulas:1*1=1*11=12/kloc-0. 1 1 1= 1232 1 1 1 1 1* 1 1 1 1=? 1 1 1 1 1* 1 1 1 1 1=? I just started thinking: the answers to the examples are all 1, and the answers should be: 123 432 1, 12345432 1.
The second level: strange 142857. The third level: the magical 9.
The fourth level: looking for mysterious numbers. I calculated according to the same idea, and in this way, I found mathematics very interesting.
There are many such examples, because mathematics is interesting, so I will keep looking for the fun of mathematics, because only by looking for the fun of mathematics can I stimulate my interest, and only by persistence can I succeed.
2. use "
From 1 to 100, my favorite number is 66, 88, 99 and so on, but my favorite number is still the boss's three digits-"100". Why?
100- 100. Every exam from grade one to grade six, what I yearn for most is 100. It stands for victory, for first place, and for your parents' reward. However, the ideal score of 100 is not so easy to achieve. You have to work hard to get it. Can you not say that 100 is the result of your hard work and sweat?
100- 100 yuan. It is the largest denomination banknote in RMB, commonly known as "hundred-dollar bill". It can buy many things. If you can take out a pile of money at once and let it flow and roll at your fingertips, it is a symbol of your wealth.
100- 100 days. Many foreign tourists came to China 100 days before the enthusiastic opening of the Beijing Olympic Games, and the Olympic Games that people all over the country are waiting for will open on 100 days. Isn't this exciting enough?
100-"Hundred Eggs". Every final exam, I will ask my mother to prepare two eggs for me, and with a fried dough stick, it will become a "hundred eggs". Morality, naturally, I want to get 100. However, this method is purely self-consolation, and the real score of 100 is earned by heart+sweat+earnest.
100-my favorite number.
3. Composition with numbers
Everyone has their favorite number.
Some people like "1" which is far ahead and always in the forefront, while others like "9" which is wobbly and wobbly. Of course, everyone has ideas and reasons for their favorite numbers.
Everyone has it, and I will never fall behind. Therefore, I have a special liking for the "6" of peace and security.
"6", like a whistle in ordinary life, can be played by anyone. It doesn't have all its own freedom. When the whistle is noisy and upset, blow it hard, no matter how noisy and upset it is, it will always calm down.
Whistles are often used by schools or the army. They serve people quietly. What a noble character! "6" is like a whistle that silently serves people. "6" means sixth grade.
The sixth grade is the biggest grade in primary school. Big sisters in grade six should take good care of their little brothers and sisters, and give them more examples to learn in a good quality life.
Strive to do better and contribute to the motherland. My love for "6" is not a general love, but a special love.
There is a delicate soft text hanging in my "little world". The cover is a "6" composed of a mouse waving to everyone, as if to say, "This book is not only beautiful in appearance, but also colorful and changeable in shape.
Open it and have a look! Open this beautiful book, and you will see that each page has different "6" security, some like notes, some like grotesque rocks, and some like fierce beasts. I really don't know when I look at it. I was shocked at first sight.
These grotesque "6" are all drawn by me. Because of my enthusiasm for "6", I will secretly write down the new "6" wherever I see it.
Go home and draw it in this book.
4. Flexible combination
Maybe you think learning is boring, maybe you like learning, but sometimes it's difficult, maybe you think it's difficult. In fact, as long as you work hard, find the law and think more, you can learn flexibly. I'm not very interested in learning, but at least I should learn well and read good books. Those words always make people feel impatient, and those dense paragraphs always make people want to doze off Those figures are always boring. In fact, we haven't found any interesting places in our study. For example, writing a composition is often said to be very good, so you can write down your true feelings. Don't use too many flowery words. Stacking words is not an article. A good article is to know how to observe, think and feel, and the most important thing is truth. Just like writing an article about human feelings, as long as you observe and think more at ordinary times. You will find that mom's hands are rough, because mom often works hard. You can write about your mother through your mother's hand, so the angle is different, unlike those articles that only use old examples. I can also think of my father with glasses, which shows that my father is knowledgeable. Writing that dad wears glasses shows that dad is knowledgeable; Write friends' blessings and wishes and see friends' sincerity; Write grandpa's white hair, see grandpa old and hardworking; Write grandma ... we can also think from another angle, or we can: write a friend's hand and watch a friend's ingenuity; Write dad's blessing, encouragement, seeing that dad loves children, and ... no matter what, we should try our best to grasp the things in life and use them flexibly.
"It's morning 10, and there are still a few hours until 8 pm." Many students are desperately counting, but one student stood up and said, "There are still 10 hours."
"Why can you think of it so soon?" The teacher asked curiously. "Because 20 points MINUS 10 points is 10 points."
"Why use 20 points instead of 8 points?" The teacher asked again. Another student interrupted: "Because 8 can't be changed into 10!" "The teacher shook his head.
"Because really, 8 o'clock in the evening is not 8 o'clock, it is 20 o'clock. Because it's been 10 hours from zero, that is, 12 at night to 10 in the morning? Represents 10 point. Does 8 pm still mean 8 pm? It's only been eight hours? So you have to subtract 10 from 20. "
The students who answered correctly said. "Yes!" The teacher smiled with relief.
Although this is only a simple question, it is quite difficult for some students because they can't come up with it at once. Because that classmate usually watches TV and often sees "Super Girl is broadcast live at 20:30 tonight", he thought for a moment and asked his parents to understand this truth.
Flexibility means discovering laws, discovering more, observing more and thinking more. Let's continue to work hard to write good articles and make them more brilliant.
5. Excellent composition of characters with about 200 words in the first grade of primary school.
Bell's mother is ill. In order to earn money to treat her, Bear gets up before dawn every day to go fishing in the river and sell fish in the market as soon as possible.
One day, as soon as Little Bear set up the fish stall, the fox, the black dog and the old wolf came. When the bear saw a customer coming, he hurriedly called, "Buy fish? I just caught this fish. How fresh! " The fox turned the fish over and asked, "How much is a kilogram of such fresh fish?" "Bear grinned:" Cheap, four yuan a catty. "
The old wolf shook his head: "I am old and my teeth are falling out." I just want to buy some fish. " The bear was reluctant: "I sold the fish to you, and who sold the fish head and tail?" The fox wagged his tail and said, "Yes, no one wants to buy the rest, but Uncle Wolf has bad teeth and can only eat some fish.
I'm telling you, black dog and I have good teeth. One of us buys fish heads and the other buys fish tails. Didn't that help Uncle Wolf and Brother Xiong? "The bear clapped his hands, but he hesitated." Good, but at what cost? "The fox rolled his eyes and replied," 2 yuan is 1 kg, and fish head and tail are 1 yuan 1 kg. Isn't it 4 yuan 1 kg? "The bear drew a picture on the ground with a stick, and then patted his thigh:" OK, let's start! ""The four of them started work together, and in a short time, the head, tail and body of the fish were separated. The bear said that the fish's body weighed 3 Jin 6 yuan. Fish head 1 kg 1 yuan, fish tail 1 kg 1 yuan. The wolf, the fox and the black dog were carrying fish. They quickly ran to the Woods, matched the fish head, the fish body and the fish tail, and divided them equally again ... On the way home, the bear thought while walking: According to 4 yuan 1 kg, I should sell 5 kg of fish to 20 yuan, but now it is only sold to 8 yuan ... The bear can't figure it out.
6. Writing with numbers as the theme
1234567
1234567 are seven very common numbers. Looking at these figures alone, most people think of numbers. However, aside from those numbers, every number can make people think.
1 is extreme.
1 is predestined by heaven and praised or devalued by people, but it is always special. When 1 is positive, such as champion, champion, etc. It is praised by people, and many pairs of eyes stare at it with envy, while 1 fully enjoys "once you climb to the top, you will see that other mountains look short under the sky." . However, the higher you climb, the more you are afraid of falling, so 1 works harder than others. If 1 falls, it must fall harder than others. 1 when counting backwards, it's just ridicule. If there are two 1, then it loses its luster and value. "One mountain can't accommodate two tigers".
What a pity
For 2, Heaven is extremely unfair, just one step away, which is far from the treatment of 1. 2 can only live with regrets forever, but when 1 falls, 2 has a chance to go up. In fact, I should feel lucky. After all, I am "below one person and above ten thousand people", and many people are squeezing this seat. However, people grow through hard work. How can they see the rainbow without experiencing wind and rain? Work hard! 2!
3 is luck.
You are really a lucky dog. Only gold, silver and copper are in the top three in the Olympic Games, and the fourth place doesn't even have a brand; In the ancient imperial examination, only the champion, the champion and the flower explorer had proper names, and the fourth place was only anonymous; Some competitions only have the first prize, the second prize and the third prize. The next prize may be a commemorative prize or an encouragement prize, so you also have a certain weight. Don't be too sad!
4 is to make persistent efforts, 5 is to make persistent efforts.
The combination of 4 and 5 is persistent and the least concerned. When people leave praise to the top three, 4 and 5 are enjoying the taste. When 4 and 5 stand up again, you should be careful of the top three. They are often dark horses. If you don't advance, you will retreat, just as the old saying goes: "If you don't advance, you will retreat."
Six and seven are hopeless.
6 and 7 are equivalent to the reciprocal of 1 and the reciprocal of 2. I write about them like this because it can comfort them. There is a story: a man asked another man, "Where did you run in the running race?" "Seventh." "So, how many people took part in the competition?" "Seven." As if it would make people look better on their faces. The reason why they are written together is that almost no one will think there is any difference between the penultimate 1 and the penultimate 2, unless the penultimate 2 is itself.
1234567, in fact, they are all the same, but people have given them different meanings, which makes them intriguing.
7. Composition about numbers
Understand that success requires accumulation.
A writer just writes, writes and writes again.
Only by constantly writing can we know what is well written and what is not. Facing the vast world, how to use a summary, how to open a world in the face of a grain of sand.
Du Fu's poem, "Reading is like a million volumes, and writing is like a god", can also be applied through writing, which is like a god.
We listened to the pianist playing beautiful music under the stage, which was infatuated, sobbing, stormy, love and hate intertwined and active in melody. It's countless.
However, before playing, the pianist practiced day and night, with bitterness, tears, irritability, anger and hatred. He or she must face all the so-called setbacks. He (she) must take some time to practice the piano every day, perhaps for survival or life, but mostly out of interest and dreams, that is, to let people enjoy the power and encouragement of music. For a glorious moment, pay the hardships of years.
We are standing in front of Leonardo da Vinci's famous painting Mona Lisa. We are surprised, daydreamed, shocked, recalled, delighted, pondered, asked questions and so on. Have colorful ideas about Mona Lisa's smile. Why? Because the painter painted to the extreme. Just like the folk story, the dragon is afraid to make the finishing point. Eyes a little, the dragon flew away. Eight dragons were painted in Kowloon, and all of them flew away, leaving only the dragon that was not the finishing touch. Of course, this is just a compliment to the painter. It is so magical and beautiful, as if there is really a dragon.
However, before Leonardo da Vinci painted this masterpiece, I don't know how many he painted. One story became a much-told story, that is, he painted eggs. An egg is round or eccentric at first glance, but it can be drawn from different angles when drawing, so that the egg has various shapes. With the concept of geometry, a garden can be divided into many sides, because a garden can also be regarded as the earth or planet. Leonardo da vinci learned the skills and artistic conception of painting from hard practice of painting eggs. Since then, we have continuously blazed a bright path.
In ancient times, there was a famous calligrapher who used a lake to refine pens. It is conceivable that he exercised the bitterness of pen and ink day and night.
How much sweat and tears did the athletes shed in this sports meeting in order to realize themselves and win glory for the country?
It took Cao Xueqin 10 years to write A Dream of Red Mansions, and now there are tens of millions of people involved in Dream of Red Mansions.
Sima Qian spent 18 years writing his Historical Records, which shocked you in a difficult environment.
Li Shizhen wrote his Compendium of Materia Medica in 27 years, which left a glorious page for medicine.
Copernicus spent 30 years writing the theory of celestial bodies, and this spirit can inspire you all your life.
Marx struggled for 40 years to write Das Kapital, and today China regards it as the truth.
It took Hugo 30 years to write Les Miserables, which is the spiritual food for people.
Goethe spent 60 years writing his Faust. What he admired was his patience and writing spirit.
Writers are reborn in writing. Writing is life, writing is thought and writing is spirit.
There is no writer who doesn't write, just like there is no pianist who doesn't play the piano, no painter who doesn't draw, no calligrapher who doesn't write, and no athlete who doesn't exercise. Numbers themselves are lifeless, but people who can use numbers are alive.