The people who have lived in the U.S. mention the American people's math, hanging on the side of the mouth words are: Hey, too bad. In fact, we all know that this refers mainly to the civilian population, the higher end of the field is certainly not the case, not to mention the top level of scientific research in various fields, let alone in the mathematical Nobel Prize - Fields Medal winners, the number of U.S. nationals in the winners or the largest number of winners.

What we mean by poor math here is that the average American is a world away from the Chinese in terms of mental arithmetic, and it's not an exaggeration to say that in terms of verbal arithmetic, any old lady selling vegetables in China is better than a native American master's degree or doctorate.

Here's a case in point: Example 1: When my sister was studying, she helped an American family take care of their children after school, and the oldest child in the family was a teenage girl. One day, the girl asked my sister a question: What does seven plus eight equal? My sister opened her mouth and said: fifteen. The girl got up from the couch, looked at my sister jumping, jumping, jumping, so excited, exclaimed: "I realized you are a genius!" Fainted, my sister is indeed very smart, in the country when being praised by others smart that is a common occurrence, listen to always take it lightly. But this little girl's compliment shocked her so much that she didn't say a word. According to this standard, all of us in China are geniuses!

There's another thing that a friend told me: a friend went to the store to buy something and remembered that she needed to get change to wash her clothes. In the U.S. and Canada, there is a penny called a Quarter, which is worth a quarter of a dollar, or 25 cents. Many public **** washing machines phones etc. are activated by stuffing this coin. I'm not sure how much I'm going to be able to get out of it, but I'm sure I'll be able to get out of it, and I'm sure I'll be able to get out of it, and I'm sure I'll be able to get out of it, but I'm sure I'm going to be able to get out of it, and I'm sure I'll be able to get out of it, and I'm sure I'll be able to get out of it!

To be honest, I didn't believe this story when I first heard it. How bad can math be? It's a dollar for four Quarters, and everyone knows that, right? My friend told me the name of the store where she exchanged the coins to prove that her story was true.

After living in the United States for some time, I slowly understood that one of the reasons why they would make this kind of jokes, which seems to be unimaginable to us, is that American schools basically don't train children in computational skills, and from elementary school onwards, students can use a calculator, and they put the emphasis of learning mathematics on the understanding and application of mathematics, which is not quite the same as the aspects we focus on. Another reason is that many of the people who work as cashiers have not even graduated from high school, and they themselves belong to the people who are deficient in education, and they are not only poor in math, but also poor in other aspects of knowledge. You should know that you don't have to take a test to go to high school in the U.S. As long as you go to class honestly and don't get into trouble, you can get your diploma. Anyone who wants to go to college can do so, the difference only lies in what kind of college they go to.

But another friend told me a story that made me reverse my conclusion, that some highly educated people are still confused about the basic concepts of math.

This friend had been working for an American company designing and renovating bridges, and one day, while reviewing a coworker's drawing, he noticed an error in the calculation of an angle, so he corrected it and told his coworker.

The young man was a newly recruited engineer who had just gotten his master's degree in engineering.

After a while, the young man came over with a drawing and asked him: How did you calculate the data you changed? My friend said, "It's simple, the sum of the interior angles of a triangle equals 180 degrees, and you subtract that number from 180 degrees to get the correct angle."

He nodded and stood there pondering.

Then he asked the thunderous question, "Would you say that the sum of the interior angles of all triangles equals 180 degrees?"

Made my friend about to faint on the spot at the sound of it ------

From Netflix

Americans are, well, pretty bad at math.

But it's not that simple to answer that question carefully. First, there are still Asians in the U.S., who are actually pretty good at math, especially if they only came to the U.S. in high school. Second, in the U.S., certain majors such as engineering, computer, or math majors come from a background that is also quite good at math, but they are in the minority after all. Considering the above two reasons, the answer to this question can be summarized by saying that most whites and blacks who grew up with an American education in the US are very bad at math.

Asians who grew up in the United States, or ABC (American born Chinese), I have contacted, but there is no deep friendship, perhaps this second-generation immigrants like my age is not much, so it's not good to speculate, but the Americans on the Asian long first impression has always been one: good at math. So maybe Asians who grew up with an American education are also better at math than other Americans, but I don't have first-hand knowledge.

Here's a little bit about my class. My graduate major is big data analytics, which is supposed to be similar to management information systems in China, 1/3 white (1/5 of which are Hispanic), 1/3 Indian, 1/3 East Asian yellow (one Japanese, one dad Korean mom white, and the rest Chinese), and coincidentally not a single black person, and it looks like we don't have any blacks in our business grad school either.

Because we had to work together on a project all semester, we were all divided into groups of 5 at the beginning of the semester, and the school went to great lengths to include at least one person from each of the 3 ethnic groups mentioned above. My group consisted of 3 American buddies, Cody, Jorge, and Dave, and one Indian buddy, Raj (we have at least 3 Indian buddies in our major with Raj in their name).

Things still have to start from a class we took last semester, the name was data mining, the Chinese name seems to be called data mining. The professor was a Taiwanese, in fact I had 6 teachers for the whole semester a ****, 3 of them were Chinese. This class is indeed difficult, a lot of the lecture is matrix, vector, algorithms, data flow operations knowledge, due to my major in the country is economics, there is no foundation in this area, the freshman year of high mathematics and all forgotten, or in this class spent a lot of time.

This course requires a high level of logical thinking and, frankly, a high level of math. The midterm exam, burst difficult, 3 difficult questions I counted half an hour each (of course, I think if I still have senior high school arithmetic ability, each 10 minutes is enough).

The result of the exam was that I got a perfect score.

When the group did the project in the afternoon, I know I got a perfect score, my friends were stunned, and then I realized that the 64 people in this profession a **** three perfect score, Yuya-kun (the Japanese), Helen (dad Filipino mom white) and I, two and a half Asian. Dave asked me how do you know how to do it, and I said there is ah in the book, and he said, how can I TM didn't find it.

Then I taught him how to do it, and then I realized that he couldn't even convert decimal to binary, and Cody hadn't even heard of it, so he was still learning, and he noticed that we were all undergraduates. dave was okay, he was one of the better white guys in the class, and he was more intelligent, and I taught him for about 10 minutes, and then he got it.

But it took 20 minutes to teach Cody binary, and he still didn't get it. I'm not sure if I'm going to be able to do this, but I'm sure I'm going to be able to do it, and I'm sure I'm going to be able to do it.

Cody and I have a good relationship, and invited him to my home to eat hot pot (domestic base), his family has a party also always asked me to go (party on the strange encounter, the future chapters will be mentioned), I also sent a Chinese name to him "dull moe", I told him that the pronunciation is called diamond, the person is as the name suggests, really is a dull moe. I'm not sure if I've ever heard of this, but I'm sure it's a good idea.

The end of the semester came, and the day before the data mining exam, we all had a headache, but I had already finished reviewing. In everyone's strong request, I traveled to the school again to give you a pre-test surprise. I have always been a man of the code of conduct is "to cultivate one's own body, Qi family, rule the country, the world", although the first step has not yet been completed, and occasionally have to help the brotherhood of it.

From 2:00 pm to 10:00 pm, I realized how painful it is to discuss anything related to math with Americans, but of course I was also in the mindset of consolidating my knowledge. The whole time I was basically explaining, Raj will also help to write the steps, each step of the operation I will write in detail on the whiteboard, some I think it is very simple logic algorithms, the class taught, I have to explain two or three times before.

When Jorge asked me how I got Y+aY=(1+a)Y, I was speechless. What's even more speechless is that it took me two hours to teach Cody to teach him to solve quadratic equations on his own, with the root formulas written for him, but the key is that people don't know which one is a, b, or c, and how to substitute them in. For example, 2x^2+bx+c=0, how to use the root formula to calculate.

And then some more retarded ones, counting 63*5, Cody subconsciously went to reach for the calculator, I stopped him, he looked at it for 30 seconds and wrote down 153, my ass. And then some more hard ones, once I went to teach him his homework, 78+56, I just wrote out the answer, he looked at it and was stunned, it really just felt like his jaw was going to drop.

When I told him that calculators are not allowed on the Chinese SAT (SAT is the American college entrance exam) math test, and found a 2014 Jiangsu college entrance exam fill-in-the-blank question (question 8 or 9) and translated it into English for him to see, and after calculating the answer on a whiteboard half full of calculations on the whiteboard, I felt like his worldview had collapsed.

In the end, the final exam was more lucky, I got full marks again, since the midterm, final and usual assignments I got full marks, I was the only one, and the final grade was naturally A+, which is still something to be complacent about.

The story doesn't end there. On the third day after the test, Cody called out of the blue and asked me if I would help his brother Casey with his math tutoring, and offered to pay me. I know his brother, Thanksgiving when Cody invited me to his home for the holiday, had a great time. It was so cool to see American dirtbags for the first time, and Cody's backyard was bigger than our entire house.

Cody's dad is the dean of our school's journalism school, which is what I call a hidden treasure. On Thanksgiving Day, I met his brother Casey, who was quite nice, and I agreed to help him with pre-calculus, the basics of pre-calculus, since we were just on winter break.

Because of my math is also general, I know than the students of graduate school is far worse than the domestic exam math let me do half of the estimated even the topic can not read, what non-zero linear system of equations, Lagrange's theorem, composite derivation in my mind have become a legend. In order not to make a fool of myself, I also reviewed a bit, thinking that this pre-calculus should be similar to the first chapter of the NPC version of the high mathematics, about the basic properties of functions.

Started to teach Casey, a big drop, I looked at their final exam to give examples, all multiple choice questions, the total **** three knowledge points, quadratic function to find the extreme value, the concept of the rate of change (ask you 20,40,65,95, the rate of increase is to increase or decrease), the basis of the exponential function (really is the basis of, such as 1000 dollars of the principal, the bank interest rate of 5% per annum, at the end of each year, the interest is transferred to the next year's principal, the interest rate of the next year's principal, the interest rate of the next year's principal, the interest rate of the next year's principal, the interest rate of the next year's principal. Transferred to the next year's principal, to find the sum of principal and interest in the fifth year). Really is the content of the domestic junior high school, at best, the first year of high school, as the 2010 Jiangsu college entrance examination received the destruction of Ge Jun, I really laugh.

So I taught him patiently, think about how the previous teacher taught me, but also their own problems to him to do, tell him how to draw a graph to see the opening of the quadratic function toward. In one **** two afternoons, about 7 hours, Cody actually gave me my 280 knives, I'm a little embarrassed. The most bloody thing is, after Christmas, Cody suddenly told me the great news, Casey got the first place in his class in math, the whole family was very happy.

I laughed my ass off because I got a text message from Casey's mom before I started teaching him, saying that I was a pain in the ass, and that Casey had been pulled down a lot in this class. So, logically, Casey came to me for tutoring again this semester, and I just taught him again the other day, last semester of high school, just started finally learning imaginary numbers, and flipped through his textbook and found conic curves like ellipses in the back.

I can already feel a big wave of dollars approaching.

From Wisdom Classes.com