Fukumae
Zhejiang University
Professor Chen Jinhui of the School of Mathematical Sciences
Mathematical Analysis A II. (H) in class
Here came a "very bold" "auditor"——
A pigeon flew into the classroom through the window
Stop at the podium
"It looks like this pigeon
I'm also listening to the lecture very seriously."
Everyone ridiculed the "learning pigeon" at the same time
Someone recognized Mr. Chen Jinhui on the podium
Reminiscing about a class
I don't want to give up the math class of "pigeons".
"Textbooks are home, you should always go home and look at them"
According to reports, Mr. Chen Jinhui entered the Department of Mathematics of Zhejiang University in September 1982 and has been engaged in public mathematics teaching, and has offered courses such as "Mathematical Analysis", "Advanced Algebra", "Calculus", "Probability Theory and Mathematical Statistics", "Linear Algebra" and "Discrete Mathematics".
A reporter from China Youth Daily saw on the official website of the college that Mr. Chen Jinhui's teaching "generally had a good effect and was well received by students", and he had won the title of "Best Teacher" several times.
When it comes to learning mathematics well, Chen Jinhui, who always smiles in class, often says to students, "Textbooks are home, you should always go home to see them" and "Textbooks are the basis for understanding basic concepts and thinking methods, if you don't know the basic concepts, it is difficult to really understand problem-solving methods and mathematical ideas." ”
Chan Kam Fai in class
Previously, he spent 4 years co-editing the textbook "Calculus", and constantly updated it according to the changes in talent training and teaching needs.
Why are textbooks so important in the study of mathematics at the university level? Chen Jinhui said that there is a big difference between the learning methods and thinking patterns of mathematics in middle school and university. For many students, math books are always the "newest one" in many high school textbooks.
In middle school, students can rely on a large number of "brush questions" to clarify knowledge points through constant repetition. However, at the university level, the amount of training for exercises is much less, and many basic concepts and thinking methods can only be truly mastered through independent thinking and studying textbooks. "So it's important to go back to the textbook and learn to summarize and summarize on your own. ”
"Swipe" the college entrance examination papers
Equip high school students with a better connection to the university classroom
However, students who have taken Mr. Chen's class will find that the teacher always carries a water cup and a small bag in class, and there are no teaching materials. Teacher Chen Jinhui said: "After decades of teaching, the teaching materials are all in my head, and they are constantly updated every year. ”
On Chen Jinhui's desk, there are college entrance examination papers, postgraduate entrance examination papers and college students' mathematics competition materials from all over the country, and they are full of dense notes.
Chen Jinhui will personally study the mathematics college entrance examination and postgraduate entrance examination questions of the year every year, and the knowledge points and thinking directions contained in them will be reflected in his classroom board and PPT that "keep pace with the times", "This is to keep the explanation content up with the 'trend' and do a good job in the connection of college and middle school mathematics." ”
College Entrance Examination Questions Compiled by Chen Jinhui (Partial)
When it comes to Chan Kam-fai's board book, the students have received rave reviews. With his mastery of knowledge points, Mr. Chen can do it with "a few pieces of chalk and a teacup", and "write wherever he wants". In the large lecture hall of hundreds of people without projections, in order to read the board clearly, the students who did not grab the front row would even hold binoculars or sit on the floor.
Chen Jinhui is writing a board book
In addition to board books, PPT is also an important auxiliary tool for lectures. He spent more than three years crafting thousands of PowerPoint presentations of Calculus and Mathematical Analysis, and rewrote them every semester in light of the new changes of the year. Tens of thousands of numbers, letters, mathematical formula symbols, and function images, accurate to each subscript: "This may also be a kind of rigor for us mathematicians." ”
Teaching PPT produced by Chen Jinhui (partial)
Chen Jinhui believes that the board book and PPT have their own advantages, and the idea of explaining the concept and theorem and solving the problem through the board book can better reflect the thinking process, and the PPT can show more content and be more efficient. "You can't rely solely on one or the other, like solving a mathematical problem, you have to combine all kinds of ways organically. ”
I arrived at the classroom at half past seven
"The most reluctant thing is the classroom"
When asked how he felt about teaching for many years, Chen Jinhui said with a smile: "It is just to do a good job in teaching in a down-to-earth manner, and do my best to help students make the learning of mathematics as easy as possible." I'm about to retire, and the last thing I want is the classroom and this group of lovely children. ”
A few years ago, in math class at 8 a.m., the prime seats in the first five rows were "in short supply" by 7:30.
Chen Jinhui usually arrives at the classroom half an hour early, but what is earlier than him is the enthusiasm of his classmates to seek knowledge. He always felt that he and his classmates were a big family, and humorous mantras such as "Kung Fu is in normal times" and "The answer really doesn't matter" were passed down by students one after another and became popular classroom "golden sentences".
He is responsible for his students' care, both in and out of class.
Once in an online class, a classmate accidentally sent a "complaint" of bad mood when chatting with a friend to the DingTalk group of the calculus course, Chen Jinhui thought that the classmate had encountered difficulties, and quickly responded and encouraged in the group, so that everyone felt the warmth from the teacher behind the screen.
"I hope that students can be like the function ex, no matter how the derivative is sought, the original intention will remain the same. Chen Jinhui said with a smile.
It's the romance of mathematics
It is also the most vivid portrayal of a good teacher!
Source: China Youth Daily Comprehensive Zhejiang University