/kloc-in the autumn of 0/930, the Red Fourth Front Army launched guerrilla warfare from Gutian to Jiangxi. In February of the following year, GongSiJun liberated counties such as Yongfeng and Lean. In June, the Red Army in western Fujian and southern Jiangxi assembled to form the Red Army Corps. On June 22nd, the Red Army attacked Zhangshu from Xingguo.
On July 22, the troops set out from Yongfeng, passed through Xiajiang Liuyuan, Nabu, Lemen and Shangmaixie, and arrived at Qicun, Xingan County, and arrived at Gongjia Village at 2 pm that day. The troops were stationed in Maixie, Shuilukeng and Laoshangdi respectively. The headquarters is located in Gongjia Village. Mao Zedong lives in Gong Huaifu's home (now his former residence). Here is an interesting story:
Waif's wife mistakenly thought that the Red Army was an army of the Kuomintang. Surprised and scared, she quickly put five old hens in the henhouse.
When Mao Zedong saw the old woman's behavior, she knew that she was frightened by the Kuomintang army. So he kindly explained: "Old man, it doesn't matter. Your chicken doesn't need to be hidden. We won't want you. "
The old woman didn't catch what Comrade Mao Zedong said (in fact, she didn't understand at all), but she still turned off her chicken. In a hurry, it was already late at night. Five chickens only found four, but they didn't catch any. That night, Huaifu's wife didn't sleep well for fear of losing the chicken.
The next morning, the old woman got up and found that she had picked it up, swept it clean inside and out, and ironed and pasted the used door panels and grass. Another chicken crowed around the four chickens in the henhouse. She simply released the chicken from the cage, sprinkled a handful of food, counted five chickens, and ordered them over and over again, making her lips move with joy.
Later, pregnant's wife told everyone about it, and Gong Jiacun almost knew about it. Old cousins in nearby Laoshang and Zhongzeng villages are also telling this story.
Academician teaches children to learn mathematics.
Wu Jianping
(The author is the deputy director of chinese mathematical society Popularization Committee and the editor-in-chief of Mathematics for Middle School Students. He has twice led the China national team to participate in the International Mathematical Olympiad. )
I have read Mr. Zhang Jingzhong's articles and books for a long time, especially the words he wrote under the pseudonym "Jing". However, the first time I met Mr. Zhang was in 1989, when I was invited by the Sichuan Mathematical Society to teach the Olympic Mathematics teacher training class in Emei Mountain. In his spare time, he listened to a class of teacher Zhang. He told the primary school teacher that "chickens and rabbits live in the same cage" and was deeply impressed. He did have "Aha, a brainwave!" Sense, processing method is popular and wonderful.
Mr. Zhang's experience is not simple. He is high flyers from Peking University. When he was transferred to Xinjiang, he worked as a middle school teacher, taught a juvenile class at China University of Science and Technology, and served as a coach of the national team of the Mathematical Olympics ... Perhaps it is his profound mathematical foundation and this experience that makes him one of the famous mathematicians who know best and care most about mathematics education in primary and secondary schools in China. Mr. Zhang is an academician of China Academy of Sciences and chairman of China Popular Science Writers Association.
In addition to his busy scientific research work, he has written a large number of popular mathematics works which are well received by teenagers. Academician Zhang Jingzhong's Lectures on Mathematics published by China Children's Publishing House should be his masterpiece. In 2002, he won the national best-seller award, the first prize of excellent popular science works in Guangzhou, and the first prize of excellent extracurricular reading for primary and secondary school students in Shanghai. It is particularly worth mentioning that in 2003, among the "Fifth National Excellent Popular Science Works Award" awarded by nearly 600 publishing houses all over the country, only three won the first prize, and Mr. Zhang's "Academician Mathematics Lecture Album" won the first prize.
Mathematicians form a group because they have the same thinking habits. Teacher Zhang calls this "mathematician's vision", which is a good formulation, very equal and easy to accept. The difference between mathematicians and ordinary people lies in this different vision and perspective, not anything else. One of the purposes of setting up mathematics courses in primary and secondary schools is to provide students with an opportunity and environment to understand and appreciate mathematicians' vision, and teachers should be aware of this.
Through a series of "simple questions" familiar to middle school students, Eye of the Mathematician shows how mathematicians gradually deepen, analyze and dig out profound laws with wide application from these common and well-known facts. Make readers understand mathematicians' thoughts and ways of doing things and seeing problems. At the same time, it shows that mathematics is profound and thorough, which can reach the point that general discussion can't; It also shows mathematicians' pursuit of truth. Let readers understand and slowly learn the ideas and methods to solve mathematical problems in a relaxed and interesting situation.
Mr. Zhang has been at the forefront of scientific research and has made outstanding contributions to the establishment of machine-readable proof theory of geometric theorems. What is commendable is that he is good at introducing his thoughts and methods in research work in a popular and vivid way and conveying them to more people. The theoretical basis of mechanical proof of geometric theorem is "elimination point method", which is called area for short. Geometric buildings are made up of beautiful huts. Euclid chose an entrance and a path through each hut. In "New Concept Geometry", Mr. Zhang tried to take everyone to choose another entrance, take a walk and stroll in another way.
From his works, we can see that Mr. Zhang has a special liking for plane geometry, and he can also see his unique views when sorting out the geometric system. Twenty years ago, Mr. Zhang put forward the "area method" to deal with plane geometry problems. Now this method has been mastered by many middle school teachers and students, especially in solving mathematical olympiad problems. The significance of plane geometry in human rational thinking training is unique, which is a bit like physical training in sports. Table tennis players should repeatedly practice practical basic skills such as serving, catching, chopping and pumping, but they should also spend a lot of time practicing useful kung fu such as weightlifting, running and endurance, which is not so "immediate". Only with good physical fitness can they play their own level and play a good game.
We should sincerely thank Mr. Zhang for his books and his work in popularizing mathematics. I really hope that more "Zhang Jingzhong" will care about, support and practice this matter. There are several martin gardner-style figures in China!
Academician Zhang Jingzhong's "Academician Mathematics Lecture Album" includes: mathematician's eyes, new concept geometry, helping you learn mathematics, rambling on mathematics (new) and mathematics and philosophy (new).