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There are no rules in math

31 点作者 hardmath123超过 9 年前

6 条评论

lordnacho超过 9 年前
My high school math teacher used to give us extra classes that weren&#x27;t directly connected to the curriculum. They were always about structure, elegance, and beauty. Quite a lot of time was also spent on history: who was studying what, when, and why. (Also there was a cult of Leonard Euler, which maybe is not so surprising if you did high school math.)<p>I found it to be the most important glue in my math education. In fact, all the natural science ought to be taught in this way. Kinda like Bill Bryson&#x27;s Brief History of Everything, plus actual calculations.<p>We won a math contest in my last year. I was expecting it to stay interesting.<p>Unfortunately when I got to university math (and the rest of engineering) was taught in a very utilitarian way. There was very little context, just a lot of similar looking derivations.<p>I blame the exam culture. In a way it&#x27;s good because it motivates you to learn something, but it&#x27;s bad because you end up learning it in a way that isn&#x27;t useful. At the end of your college days, you are unlikely to remember just how Stoke&#x27;s theorem works or the coefficients in Runge-Kutta. That&#x27;s just because the size of the curriculum is huge. But if you had a context, a set of stories about when and why something was studied, you&#x27;d have a much better chance of being able to recall that it even exists.
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stanleydrew超过 9 年前
Having earned an undergraduate degree in math I&#x27;ve often had similar thoughts about US elementary math education&#x27;s emphasis on rules and mechanical calculation and memorization rather than more abstract concepts like pattern matching.<p>Turns out there was a thing called &quot;New Math&quot; (<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;New_Math" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;New_Math</a>) in the 1960s where public elementary schools tried to teach concepts from set theory and abstract algebra. Basically everyone hated it.<p>Perhaps there was just a curriculum failure, or perhaps teachers weren&#x27;t well-equipped enough to teach the material. But we can&#x27;t ignore the attempt and need to come up with an answer for why New Math failed before we can try it again.
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powera超过 9 年前
That problem is actually very easy to solve. If you number the cells in binary, patterns fall out enough that it&#x27;s easy to convert back and forth from the original numbering to the final numbering.<p>If he wants to just work it out by hand, well, maybe he doesn&#x27;t understand math as well as he thinks. If you want to use math to &quot;build hammers&quot;, it help to know what a nail is first.
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vinay_ys超过 9 年前
Totally agree with the author. In high-school, I was interested in physics more than math and whenever I took interest in math it was because it would help me understand some specific aspect of the physics better. As I got into engineering, my interest in math again were only in areas where it was directly useful to me (like signal&#x2F;image processing, operations research etc.) As a CS engineer, I&#x27;ve used very little math I was forced to learn by rote to write exams. Only use that came of it I think is training my brain muscles to do pattern recognition and fast memory recall.
stuxnet79超过 9 年前
First off cool blog.<p>But is there a reason why the maintainer of this blog hasn&#x27;t shared his or her identity? I am very interested in your background. It looks like some of your earlier entries were made when you were in high school. In any case I am very impressed. Sent a few of your articles to my younger siblings to read.
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nuxi7超过 9 年前
Smokey, this is not math. This is bowling. There are rules.