Elementary school mathematics general knowledge speech 1. A speech on mathematical knowledge.
Middle school is the spring of life, and it is a very important stage for teenagers to grow physically, acquire knowledge and form an outlook on life.
However, at this learning stage, some students feel very hard about mathematics. Therefore, knowing why and how to learn mathematics is a problem that every middle school student must know and learn.
Mathematical knowledge is as vast as the ocean and as majestic as the mountain. No matter how talented, energetic, tenacious and excellent learning conditions a person is, he can't learn all the mathematics knowledge.
Some students always want to learn everything. They want flowers to bloom next to a bunch of ripe grapes, but the facts tell us that this is impossible! We must start from the first step and make steady progress step by step, so that we can cross the vast sea and climb the magnificent peaks. The study of mathematical knowledge can not be done by listening carefully and memorizing.
Legend has it that a man met a fairy by chance, and he gave him a gift of turning stone into gold, but he didn't want gold, but asked him to turn stone into gold. Why does this person need fingers? Because he knows that no matter how much gold he gives himself, gold is always limited, but if he has a finger that turns the stone into gold, he can do whatever he wants.
I often tell students this story, but I inspire them: Xian Weng's fingers are good, but after all, they belong to others. If we use it, is it spiritual? It can be seen that we should learn more about Xianweng's golden touch.
The ancients said: "Giving you fish can only meet the needs of a meal, and giving people fish will benefit you for life." This is the truth. Mathematics learning method is the means, methods and ways used in mathematics learning.
Learning methods are produced and used in the process of learning. Mastering good methods is very important, but it is not an easy task. This requires hard work and perseverance.
Only by perseverance every day, over time, can mathematics learning become a conscious behavior, so as to grasp the initiative of mathematics learning. Therefore, there is no shortcut to mathematics learning method, it is only a down-to-earth effort procedure and various concrete measures in this learning process.
The ancients said: "Everything is established in advance, and it will be abolished if it is not planned." Whether two students with the same intelligence have a study plan directly affects the learning effect.
It is an important principle of scientific learning method to use time scientifically and study in a planned way within a limited time. Therefore, the lack of planning in mathematics learning is one of the important reasons why some students feel hard for a long time.
In order to improve the efficiency of mathematics learning, change passive learning into active learning, and be a director of learning, we must grasp several steps: Step one: do a good job in preview before class. In the process of preview, read, think and write properly, sketch and write some comments on the book.
In particular, we should use mathematics to learn reading methods, that is, we can't read from beginning to end like Chinese reading. Give some examples, that is, carefully examine the questions, then close the book and try to do it in the exercise book.
Then open a pair of books, improve the revisions you have made, check the effect of preview in time, and strengthen your memory. At the same time, we can get a preliminary understanding of the basic content and ideas of the textbook, find out the key points and problems that we don't understand, and try to take notes, taking preview notes as the basis of class notes.
Sun Tzu, an ancient military strategist in China, famously said, "Know yourself and know yourself, and you will win every battle." This means that after you have a full understanding of yourself and your opponent, you can be fully prepared and you can defeat the enemy.
Preview is the preparation of "knowing yourself and yourself", just like the gunfire of a race. Although it is not allowed in the rules of running, there is no such rule in learning, which is not only allowed but also encouraged.
Doing a good math preview is to do it well in advance and make math learning change from passive to active. In short, math preview is self-study before class, that is, before the teacher gives a lecture, he learns a new lesson independently, so that he can have a preliminary understanding and mastery of the new lesson.
Stereo preview can greatly improve efficiency. Step 2: Master the correct listening methods.
Handle the relationship between attending class and taking notes, attach importance to classroom thinking and answering questions, and constantly improve the classroom learning effect. Students must have a good class and listen carefully. First of all, they should be prepared before class, intellectually, materially and physically. Secondly, we should concentrate on listening, enter the learning state as soon as possible, participate in all learning activities in the classroom, and always concentrate; Third, we should learn to think scientifically, pay attention to understanding, don't just recite conclusions, discover the ideas of teaching materials and the organization of teachers' explanations in time, be brave in setting doubts, express our opinions and be good at verifying answers from multiple angles; Fourth, students should make all kinds of marks and comments in time and take notes selectively.
5. Mathematics classroom exercise is a very important link. The classroom exercise book should be ready at any time and kept well for review and use. Every class should focus on what you have learned, practice carefully and consolidate what you have learned.
Classroom is the basic form for students to learn mathematics at school, and students spend most of their time in the classroom. According to the provisions of the mathematics syllabus, the total class hours of a student's mathematics class in middle school are about 5000.
What an amazing number it will be to accumulate 45 minutes in each class! The quality of academic performance depends on many factors, but how to treat each class is the key. In order to get better grades, we should first use the 45 minutes of class to improve the efficiency of listening to lectures.
We should do the following four things in class: 1, and attend class with questions; 2. Grasp the thinking of the teacher's lecture; 3. Develop the habit of listening, thinking and remembering, and try to digest and consolidate knowledge in class; 4. Actively answer the teacher's questions. In this way, the requirements of class are basically mastered.
Step 3: Review in time after class. According to the characteristics of mathematics, we should review in various ways to consolidate and improve the problem solving.
Review textbooks after class and master the basic contents of review; Try to recall, independently recall the contents of the teacher's class, and form a good habit of thinking hard; At the same time, organize notes and processes to supplement knowledge; In addition, according to what you learn every day, practice more questions and be diligent in consolidation. Read more reference books after class, so that the mastery of knowledge will develop in depth and breadth, forming a virtuous circle of learning.
Review is the continuation of preview and class.
2. A speech on mathematical knowledge.
Go to Baidu Library to check the complete content > Content from users: I don't like 123' s knowledge lecture, also called speech. It is a speech at a grand ceremony and in some public places.
The speech is the basis of a speech, and it is the norm and prompt for the content and form of the speech. It embodies the purpose and means of the speech, as well as the content and form of the speech. Speech is a style that people often use in their work and social life.
The main features of the speech are: first, pertinence. Speech is a social activity and a form of publicity used in public places.
In order to explain the audience, impress the audience and "conquer" the masses with thoughts, feelings, examples and theories, it must be realistic and targeted. The so-called pertinence, first of all, is that the questions raised by the author are the concerns of the audience, and comments and arguments must have eloquent logical power, be accepted and convinced by the audience, in order to produce the social effects they deserve; Secondly, we should understand that there are different types of "public places" with different audiences and levels, such as party groups, professional conferences, service clubs, schools, social organizations, religious groups, and various competition occasions. When writing, we should design different speech contents for the audience according to different occasions and different objects.
Second, it can be said. The essence of speech lies in "speaking" rather than "doing", with "speaking" as the main part and "doing" as the supplement.
Because the speech has to be spoken orally, it must be based on the premise of good presentation. If some articles and works are mainly for reading and appreciating, but for appreciating the meaning and charm, then the requirement of the speech is "catchy".
A good speech is very important to the speaker; It should be nice to the listener. Therefore, after the speech is written, the author had better check it by trial or meditation. Anything you can't say clearly or hear clearly (such as the sentence is too long) should be revised and adjusted.
Second, for example, Engels "such as.
3. Pupils' Mathematics Speech
I once saw such a sentence: learning mathematics is like a fish like a net; Knowing how to solve a problem is like catching a fish, and mastering the solution to the problem is like having a net. So the difference between "learning math well" and "learning math well" lies in whether you have a fish or a net. I chose math because I wanted to catch fish with a net. Mathematics, a thoughtful course, is very logical, so it always gives people the illusion. Mathematics is like a mountain peak, soaring into the sky. I felt relaxed at first, but the higher I climbed, the steeper the mountain became, which made people feel scared. At this time, only those who really like mathematics will have the courage to continue climbing. Therefore, people who stand at the peak of mathematics all like mathematics from the heart. Remember, people standing at the foot of the peak can't see the summit. Although I haven't reached the top yet, I still hope to see the beautiful scenery at the foot of the mountain on the top.
Let me briefly talk about my favorite math from several aspects.
First: Mathematics comes from life and is applied to life.
Applied mathematical thinking applies abstract mathematical tools to solve practical problems in science, industry and commerce. Mathematics is a part of life, which exists in the collective of life. Without a collective life, mathematics will be a dead sea, and mathematics without life will be unattractive. Let's give a simple example: first, suppose there are 365 days in a year, then in a party attended by 366 people, there must be two people with the same life.
Second: interest in mathematics.
Mathematics is very interesting, which is also a very important aspect that I like mathematics. This is also reflected in all aspects of life, for example, mathematical couplets. Now let me show you two sentences: the combination of real number, imaginary number and two numbers has become a pair, and the combination of inner and outer centers is concentric. Logarithms of positive and negative exponents are paired, and solid lines, dotted lines, straight lines, curves and straight lines are even numbers.
Third: the beauty of mathematics.
In the field of our life, we can see some things with mathematical characteristics everywhere, and they are all beautiful. So we can see so many beautiful things in life, can't we add more colors to our life?
Fourth: mathematical problems.
Sometimes, although the problem is simple, it turns out to be quite difficult. For example, 1 1=2 and four-color conjecture. That's why I'm interested.
Mathematical science is not only the foundation of all natural sciences and engineering technology, but also has penetrated into many research fields of humanities and social sciences such as economics, education, demography, psychology, linguistics, literature, history and so on with the advent of the information society, and has become the cornerstone of contemporary material civilization. At the same time, the mathematical quality characterized by rational thinking mode and thinking mode of induction, analogy, analysis and deduction cultivated by strict logical reasoning training in mathematics can make you have strong adaptability, regeneration and transplantation ability. With mathematical knowledge and quality as the foundation, there will be inexhaustible wealth.
Based on so many aspects, I have a great interest in mathematics and I like it. I believe that standing at the peak of the future will see our unprecedented wonders.
4. Primary school students' mathematics speech
The origin of "mathematics" The ancient Greeks introduced names, concepts and self-thinking into mathematics, and they began to guess how mathematics came into being very early.
Although their guesses were just jotted down, they almost occupied the thinking field of guesses first. What the ancient Greeks wrote down at random became a lot of articles in the19th century, but it became an annoying cliche in the 20th century.
Herodotus (484-425 BC) was the first person who began to guess. He only talks about geometry. He may not be familiar with general mathematical concepts, but he is sensitive to the exact meaning of land survey.
As an anthropologist and social historian, Herodotus pointed out that the geometry of ancient Greece came from ancient Egypt. In ancient Egypt, because the land was flooded every year, people often needed to re-measure the land in order to achieve the purpose of taxation. He also said: The Greeks learned the use of the sundial from the Babylonians and divided the day into 12 hours. Herodotus' discovery was affirmed and praised.
It is superficial to speculate that ordinary geometry has a glorious beginning. Plato cares about all aspects of mathematics. In his fantasy fairy tale "Fedrus", he said: The story took place in Locklatine (region) in ancient Egypt, where an old fairy lived. His name is Theuth. To Seth, ibis is a divine bird. With the help of ibis, he invented numbers, calculation, geometry and astronomy, as well as board games.
Plato is often full of strange fantasies because he doesn't know whether he is Aristotle or not. Finally, he talked about mathematics in a completely conceptual language, that is, mathematics with its own development purpose. Aristotle said in chapter 1 of his Metaphysics: Mathematical science or mathematical art originated in ancient Egypt, because there were a group of priests who devoted themselves to mathematical research freely and consciously.
It is doubtful whether what Aristotle said is true, but this does not affect Aristotle's intelligence and keen observation. In Aristotle's book, ancient Egypt is mentioned only to solve the argument about the following problems: 1 Knowledge serves knowledge, and pure mathematics is the best example: 2. The development of knowledge is not due to consumers' demand for shopping and luxury goods.
Aristotle's "naive" view may be opposed; But it can't be refuted because there is no more convincing point of view. Generally speaking, the ancient Greeks tried to create two "scientific" methodologies, one is ontology, and the other is their mathematics. Aristotle's logical method is somewhere between the two, and Aristotle himself thinks that his method can only be an auxiliary method in a general sense.
The ontology of ancient Greece has obvious characteristics of parmenides's "existence" and is slightly influenced by Heraclitus's "rationality". The characteristics of ontology are only shown in the later translation of Stoicism and other Greek works. As an effective methodology, mathematics has gone far beyond ontology, but for some reason, the name of mathematics itself is not as loud and affirmed as "existence" and "rationality".
However, the appearance of mathematical names reflects some creative characteristics of ancient Greeks. Below we will explain the origin of the term mathematics.
The word "mathematics" comes from Greek, which means something "learned or understood" or "acquired knowledge", and even has the meanings of "obtainable things" and "learnable things", that is, "knowledge gained through learning". The meanings of these mathematical names seem to be the same as those of Sanskrit cognates. Even Littre, a great dictionary editor (E.Littre was also an outstanding classical scholar at that time), included the word "mathematics" in his French dictionary (1877).
The Oxford English Dictionary makes no mention of Sanskrit. In the Byzantine Greek dictionary Suidas in the 10 century, some terms such as physics, geometry and arithmetic were introduced, but the word "mathematics" was not listed directly.
The word "mathematics" has gone through a long process from expressing general knowledge to expressing mathematics specialty, which was completed in Aristotle's time, not in Plato's time. The specialization of mathematical names lies not only in its far-reaching significance, but also in the fact that only the specialization of the word "poem" in ancient Greece could match the specialization of mathematical names at that time.
The original meaning of "poem" is "something that has been made or completed", and the specialization of the word "poem" was completed in Plato's time. However, for some reason, neither the dictionary editor nor the knowledge questions involving noun specialization mentioned poetry, nor did they mention the strange similarity between poetry and mathematical name specialization.
But the specialization of mathematical names has really attracted people's attention. First of all, Aristotle put forward that the special usage of the word "mathematics" originated from Pythagoras' thought, but there is no data to show that there is similar thinking about the natural philosophy originated from Ionia.
Secondly, among Ionians, only Thales (640 BC? -546) The achievement in "pure" mathematics is credible, because besides Diogenēs Laertius's brief mention, this credibility comes from a later and more direct mathematical source, that is, Proclus's comments on Euclid: but this credibility does not come from Aristotle, although he knows Thales is a "natural philosopher"; Nor did it come from the early Herodotus, although he knew that celis was a "lover" of politics and military tactics, and even predicted a solar eclipse. These may help explain why there is almost no Ionian component in Plato's system.
Heraclitus (500 BC? There is a famous saying: "Everything is in motion, and things are impermanent", "People can't fall into the same river twice". This famous saying puzzled Plato, but Heraclitus was not respected by Plato like parmenides.
From the perspective of methodology, parmenides's theory of matter is a strong competitor of Pythagoras mathematics compared with Heraclitus' theory of change. For Pythagoras, mathematics is a "way of life".
5. Find a primary school student's math speech: a story and research about a mathematician or a number.
I once saw such a sentence: learning mathematics is like a fish like a net; Knowing how to solve a problem is like catching a fish, and mastering the solution to the problem is like having a net. So the difference between "learning math well" and "learning math well" lies in whether you have a fish or a net. It is precisely because I want to catch fish with a net that I chose mathematics ... Mathematics is a thoughtful course, so it is very logical. When we first started climbing the mountain, we felt relaxed, but the higher we climbed, the steeper the mountain became, which made people feel scared. At this time, only those who really love mathematics will have the courage to continue climbing. Therefore, people who stand at the peak of mathematics all like mathematics from the heart. Remember, people standing at the foot of the peak can't see the peak. Although I haven't stood on the top yet, I still hope to see the beautiful scenery at the foot of the mountain. Let me briefly talk about my favorite math from several aspects. First, mathematics comes from life and is applied to life. Applied mathematical thinking applies abstract mathematical tools to solve practical problems in science, industry and commerce. Mathematics is a part of life, and it lives in the collective of life. Without a living collective, mathematics would be a dead sea. Mathematics without life will be unattractive mathematics. Let's give a simple example: first, suppose there are 365 days in a year, then in a party attended by 366 people, there must be two people with the same life. Second, the interest in mathematics. Mathematics is very interesting, which is also an important aspect that I like mathematics. But also in all aspects of life, for example, mathematical couplets. Now let me show you two sentences. Inner heart, outer heart and double heart are concentric. Logarithms of positive and negative exponents are paired, and solid lines, dotted lines, straight lines, curves and straight lines are even. Third, the beauty of mathematics. In the field of our life, we can see some things with mathematical characteristics everywhere, and they are all beautiful. Then we can see so many beautiful things in life, can't we add more colors to our life? Fourth, mathematical problems. Sometimes, although it is a simple question, it is quite difficult to prove. For example, 1 1=2 and four-color conjecture. That's why I'm interested. Mathematical science is not only the foundation of all natural sciences and engineering technology, but also has penetrated into many research fields of humanities and social sciences such as economics, education, demography, psychology, linguistics, literature and history with the advent of the information society. It has become the cornerstone of contemporary material civilization. At the same time, the mathematical quality characterized by rational thinking mode and thinking method of induction, analogy, analysis and deduction cultivated by strict logical reasoning training in mathematics can make you have strong adaptability, regeneration and transplantation ability. With mathematical knowledge and quality as the foundation, you will have inexhaustible wealth. Based on so many aspects, I am very interested in mathematics, and I like it.
6. Primary school students' mathematics speech
I once saw such a sentence: learning mathematics is like a fish like a net; Knowing how to solve a problem is like catching a fish, and mastering the solution to the problem is like having a net.
So the difference between "learning math well" and "learning math well" lies in whether you have a fish or a net. I chose math because I wanted to catch fish with a net.
Mathematics, a thoughtful course, is very logical, so it always gives people the illusion. Mathematics is like a mountain peak, soaring into the sky. I felt relaxed at first, but the higher I climbed, the steeper the mountain became, which made people feel scared. At this time, only those who really like mathematics will have the courage to continue climbing.
Therefore, people who stand at the peak of mathematics all like mathematics from the heart. Remember, people standing at the foot of the peak can't see the summit.
Although I haven't reached the top yet, I still hope to see the beautiful scenery at the foot of the mountain on the top. Let me briefly talk about my favorite math from several aspects.
First: Mathematics comes from life and is applied to life. Applied mathematical thinking applies abstract mathematical tools to solve practical problems in science, industry and commerce.
Mathematics is a part of life, which exists in the collective of life. Without a collective life, mathematics will be a dead sea, and mathematics without life will be unattractive. Let's give a simple example: first, suppose there are 365 days in a year, then in a party attended by 366 people, there must be two people with the same life.
Second: interest in mathematics. Mathematics is very interesting, which is also a very important aspect that I like mathematics.
This is also reflected in all aspects of life, for example, mathematical couplets. Now let me show you two sentences: the combination of real number, imaginary number and two numbers has become a pair, and the combination of inner and outer centers is concentric.
Logarithms of positive and negative exponents are paired, and solid lines, dotted lines, straight lines, curves and straight lines are even numbers. Third: the beauty of mathematics.
In the field of our life, we can see some things with mathematical characteristics everywhere, and they are all beautiful. So we can see so many beautiful things in life, can't we add more colors to our life?
Fourth: mathematical problems. Sometimes, although the problem is simple, it turns out to be quite difficult.
For example, 1 1=2 and four-color conjecture. That's why I'm interested.
Mathematical science is not only the foundation of all natural sciences and engineering technology, but also has penetrated into many research fields of humanities and social sciences such as economics, education, demography, psychology, linguistics, literature, history and so on with the advent of the information society, and has become the cornerstone of contemporary material civilization. At the same time, the mathematical quality characterized by rational thinking mode and thinking mode of induction, analogy, analysis and deduction cultivated by strict logical reasoning training in mathematics can make you have strong adaptability, regeneration and transplantation ability.
With mathematical knowledge and quality as the foundation, there will be inexhaustible wealth. Based on so many aspects, I have a great interest in mathematics and I like it.
I believe that standing at the peak of the future will see our unprecedented wonders.
7. Do you have a three-minute math story? I'm going to give a speech tomorrow.
Math Story-Change A customer came to a walking stick shop and bought a walking stick from 30 yuan. He took out a 50 yuan bill and asked for change. It happened that there was no change in the shop. The shopkeeper went to the neighbor to change 50 yuan's money and gave the customer 20 yuan's change. Just after the customer left, the neighbors came in in a panic, saying that this 50 yuan banknote was fake. The shopkeeper had to compensate his neighbor 50 yuan. Then I went out to chase customers. And caught him and said, "you liar, I paid 50 yuan, my neighbor, I gave you 20 yuan." You took another cane, and you have to compensate me for the loss of 100 yuan. " The customer said, "The cost of a crutch is the 30 yuan left by your neighbor when he gave you change, so I only took your 70 yuan." Please calculate the actual loss of the sugarcane shop. It should be added here that the cost of crutches is 20 yuan. If this customer succeeds, how much will * * * cheat?
8. A two-minute speech is required before math class.
Small knowledge of mathematics
Abstract: An interesting common sense of mathematics is also very good for math newspaper. People call 12345679 "Leak 8". This "number without 8" has many surprising characteristics, such as multiplying by multiples of 9, and the product is actually composed of the same number. People call this "uniform".
An interesting common sense of mathematics is also good for making a math newspaper.
People call 12345679 "Leak 8". This "number without 8" has many surprising characteristics, such as multiplying by multiples of 9, and the product is actually composed of the same number. People call this "uniform". For example:
12345679*9= 1 1 1 1 1 1 1 1 1
12345679* 18=222222222
12345679*27=333333333
……
12345679*8 1=999999999
These are all 0 times to 9 times of 65438+9.
And 99, 108, 1 17 to 17 1. Finally, the answer is:
12345679*99= 122222222 1
12345679* 108= 1333333332
12345679* 1 17= 1444444443
… …
12345679* 17 1=2 1 1 1 1 1 1 109
It is also a "uniform".
Do you know that?/You know what? Do you know that?/You know what? Each of us carries several rulers.
If the length of your "one foot" is 8 cm and the length of your desk is 7 feet, you know that the desk is 56 cm.
If you take a step of 65 cm, when you go to school, count how many steps you take, and you can figure out how far it is from your home to school. Height is also a ruler.
If your height is 150 cm, then you are holding a big tree and your hands are just closed. The length of this tree is about 150 cm.
Because everyone's arms are flat, the length and height between the fingertips of both hands are similar. If you want to measure the height of a tree, shadows can also help you. You only need to measure the length of the shadow of the tree and your own shadow. Because the height of the tree = the shadow length of the tree * the height of the graph. Why is this? Learn the proportion and you will understand.
If you go to play, if you want to know how far the mountain ahead is from you, you can ask the sound to help you measure it. Sound can travel 33 1 meter per second, so you can hear the echo by shouting at the mountain for a few seconds. Multiply the time to hear the echo by 33 1 and divide by 2.
Learning to use these rulers on you is very beneficial for you to calculate some problems. It will also provide convenience for your daily life. You should think about it!
In winter, when it is freezing, cats and dogs don't lie down as we think, but like to curl up. So have you ever wondered why? Does it have anything to do with math? Let's think of a familiar math problem, the topic is: How many different ways can we spell * * * with 1 cm long 12 cubes?
Through hands-on splicing and experiments, four different splicing methods are obtained.
Using what we have learned, we can know that the volumes of these four cuboids are all equal, and their surface areas are 50 (square centimeter), 40 (square centimeter), 38 (square centimeter) and 32 (square centimeter) respectively, that is to say, (Figure 4) has the smallest surface area.
This problem illustrates a mathematical law: under the condition of equal volume, the more overlapping parts between small cubes, the smaller their surface area.
According to this mathematical law, it is not difficult to realize that cats and dogs like to curl up and sleep in winter. It is in the case of constant volume that the overlapping parts of their bodies increase. So reducing the exposed surface area, that is, reducing the cold area, will also reduce the heat emitted. Cats and puppies can sleep curled up in winter to protect themselves from cold and heat.