The book written by Dr. Wu Jun to the child, falling in love with mathematics, it turned out to be so simple!

This year's college entrance examination mathematics was called "the hardest time in ten years" by netizens. In response to why mathematical problems are so difficult, the Ministry of Education's Examination Institute made an official response: through setting comprehensive problems and complicated situations, strengthening the inspection of key abilities, exerting the selection function of the college entrance examination of mathematics, and helping improve the comprehensive quality of students.

Combining my country's current development trend, the reply from the Ministry of Education's Examination Institute is not difficult to understand. In the future, my country will inevitably work hard in the scientific and technological links and is committed to mastering more core technologies, which requires a lot of talents behind it.

Mathematics, physics, biology, and chemistry are important than before, and mathematics is the basis of all sciences.

What we need more is mathematical thinking, not mathematics knowledge

Science and technology power is the trend, and selecting talents with mathematics is the first step.

But many people may have such doubts: Mathematics seems to only solve the problems on the test papers, cannot solve the problems in life. What is the use of mathematics?

Regarding such doubts, Dr. Wu Jun explained in a paragraph in the preface of "Give the Child's Mathematics Class":

We usually treat mathematical knowledge as mathematics. This is actually a misunderstanding. To learn mathematics, we should not target how many mathematical formulas, but to exercise the thinking methods used in the process of solving problems, that is, mathematical thinking.

People with mathematical thinking not only make organized things, but also good at thinking independently, can open up thinking points and reflexual thinking at multiple angles. Such people can easily do it in the study. Naturally, it was not worse.

What is the mathematical thinking? In an interview, Teacher Wu Jun gave such two examples:

1. Mathematical thinking of "negative number"

We basically start learning the concept of "negative numbers" in senior grades or junior high schools. But many people don't know why they learn, and they are over after the test.

For example, if you measure a person's wealth, this person not only has assets, but he also has liabilities. Even if his surface is bright, there are many deposits of banks, but he may actually be in a state of asylum. A manifestation of negative thinking.

For another example, for example, he recruited a editor to change the manuscript, but he worked sloppy, and he couldn't see the wrong words every time. We had to spend time to organize it. It was found that it took time to take time than myself. At this time, you will find that the value he produces is more "negative".

2. "Flying Wheel Effect"

Let's talk about a mathematical thinking, called "flywheel effect". When the flywheel is rotated, it is more laborious at first, but after a while, the speed will be very fast. This is actually a point concept in the math microconent.

Just like the concepts of "acceleration" and "speed" in physics. If the light has acceleration and does not have time accumulation, it does not change the speed. The acceleration needs to accumulate enough time. There is a lag effect in it.

For example, we have taken a measure, but this measure needs to be visible for a period of time. This is a flywheel effect. But most people hope that if it is implemented today, there will be results tomorrow.

In fact, if we know a little about the concept of points, we will understand that it is actually because the accumulation effect has not been achieved, and it takes some time.

Mathematical thinking is not only helpful for children's science subjects, but also can be seen everywhere in daily life. How can mathematical thinking be cultivated?

In "Mathematics for Children", 40 mathematical problems have been selected for the history of human mathematics development, and the child can understand the solution process of each problem through the form of a story.

Let the children feel the wisdom of scientists shining on mathematical issues in the story, to explore the context of human exploration in the history of mathematics development, so as to learn to observe and understand the real world with mathematics.

Dr. Wu Jun's mathematics enlightenment class written to children

The first thing to give children is to ensure the authority of the content, so the author is very important.

In the academic world, there is such a person who has an excellent resume like a plug -in, the output level is still very high, and his works in the field of mathematics are also very popular -he is Dr. Wu Jun.

Dr. Wu Jun

In 1984, Teacher Wu Jun was admitted to Tsinghua University and learned a major that was very unpopular at the time -computer.

Along the way Tsinghua Computer Bachelor, Master of Tsinghua Electronic Engineering, Dr. John Hopkins University in the United States, I also studied in the computer. patent.

After graduating from a PhD in 2002, he chose the company that had just been established for 4 years, Google. Soon after arriving at Google, Wu Jun and three colleagues created online search for anti -cheating research and won the Google Engineering Award.

One year later, he led the design of Google's Chinese -Japanese and Korean search algorithms. Later, Mr. Wu Jun resigned from Google to Tencent and served as the vice president of the search business. And as the general person in charge of the national major "new generation search engine and browser" project ...

Teacher Wu Jun not only glows and heats in the technology field, but also is willing to output and share his experience with everyone. His "Beauty of Mathematics", "Top of the Inspur", "The Light of Civilization" and "Intelligent Age" and other books have affected many practitioners in the science and technology industry.

In addition, Teacher Wu Jun also paid great attention to the education of his children, and the child was also benefited. His daughter was studying at Massachusetts Institute of Technology in famous American schools. If you want to choose a person to write an enlightenment book in the field of mathematics, Teacher Wu Jun deserves it.

40 mathematical issues that affect the world, more than 100 textbooks that have not been talked about

Wang Dianjun, the president of Tsinghua University Middle School, wrote in the recommendation of the "Mathematics Class for Children":

Learning mathematics is not just to take the test, but also to improve the child's mental thinking. Wu Jun's teacher can tell the child's mathematical thinking in the 40 classic mathematics problems. The ability.

So what do you say in the book?

Teacher Wu Jun has selected 40 mathematical problems that have an important impact on the history of human mathematics development in this book.

For example, the peripheral rate, the pyrardia theorem, the unreasonable number of the number, the invention of the advancement, the invention of the 0, the golden segmentation, the area of ​​the rectangular area, the circular area problem, the volume formula of the ball, the two -e -terms development, and the invention of the Yanghui triangle and the virtual number ...

For example, taking the perimeter as an example, Teacher Wu Jun starts with the history of human understanding:

Human understanding and using the history of circle is very long. After the early human ancestors worked hard to measure the perimeter of the circle, they found that no matter how big or small the circle is, the circularity is removed. All the basic fixed values ​​are obtained, so people give this magical number a proprietary name: the circumstances.

Then introduce the five stages experienced by human research calculation of the peripheral rate: starting from experience-measurement estimation, from the permeable calculation-geometric method, from the number of calligraphy-algebra methods, calculus calculations, computer tools.

In the end, Teacher Wu Jun talked about the application scenario of the mathematical concept of the pi, allowing children to return to daily life for the concept of mathematics in the textbook, making these concepts more three -dimensional.

For example, various types of machinery are inseparable from the calculations related to circular. As large as the train, as small as the design and manufacturing of clocks, the speed and cycle of the circular motion must be accurately calculated, and the GPS of the mobile phone cannot be separated from the accurate circular rate.

Mathematics is a very abstract discipline. How to make children open up mathematics and become interested in mathematics is a problem that many parents are urgent to solve.

This mathematical enlightenment book may allow children to understand where the unknown mathematical concepts come from and where to apply.

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