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You never did math in high school

69 点作者 DavidChouinard超过 11 年前

25 条评论

cperciva超过 11 年前
Yes I did. Also:<p><i>when a freshman college student tells me that he was always good at math, it translates to “I was very good at following obscure steps to manipulate mysterious symbols, without any real understanding of what they mean.”</i><p>The most common complaint I hear about undergraduate students is that they <i>aren&#x27;t able to blindly manipulate symbols</i>, and consequently get hopelessly confused when they have to deal with &quot;unintuitive&quot; concepts.
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ruswick超过 11 年前
The OP comes across as very fond of deriding the US schooling system, but proposes nothing beyond an egotistical assurance that <i>he</i> can teach math well even though no one else can.<p>Math education is <i>not</i> homogenous. People are not homogenous. Everyone experiences math in different ways both in school and in everyday life. Some people will simply memorize the steps necessary to solve problems. Some will actually grasp the theory behind the problem solving. Some will experience very little of what is considered &quot;classic&quot; high school math. (At my school, those who are not tracked into calculus or statistics as Seniors take a course that deals with things like formal logic. It actually seems really interesting.) The OP&#x27;s blanket assertions are simply wrong.<p>Moreover, math is a massive field. The OP&#x27;s claim that calculus and algebra are not math but that &quot;pattern recognition&quot; is is just absurd.
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thrush超过 11 年前
I think that you&#x27;re getting at a great point, but another contributing factor may be that high school has a different scheduling structure.<p><pre><code> High School: Classes&#x2F;Week = 5 Time&#x2F;Class = 45 min HW Frequency = Every Day or Every few Days Exam Frequency = Every Week or Every Couple Weeks University: Classes&#x2F;Week = 2 or 3 + Discussion Time&#x2F;Class = 90 or 120 min HW Frequency = Every Week or Every Couple Weeks Exam Frequency = Every Month or 3 per Semester </code></pre> All I am trying to say is that difficulty of material is not always the problem. Sometimes the system can be the problem. It&#x27;s clear that university expects you to spend more time doing independent study given there is more time between sessions, yet many new students aren&#x27;t accustomed to spending their free time this way.
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pbiggar超过 11 年前
See Lockhart&#x27;s Lament for an in-depth view of the same argument: <a href="http://www.maa.org/sites/default/files/pdf/devlin/LockhartsLament.pdf" rel="nofollow">http:&#x2F;&#x2F;www.maa.org&#x2F;sites&#x2F;default&#x2F;files&#x2F;pdf&#x2F;devlin&#x2F;LockhartsL...</a>
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shalmanese超过 11 年前
I remember my dad giving me the following problem on a long distance car ride:<p>An A4 sheet of paper, when folded in half, becomes an A3 sheet of paper with the exact same ratio of long side to short side. Given this information, can you figure out the what the ratio is?<p>I must of spent 3 hours of that car ride doodling on a piece of paper trying to nut out that problem with no additional information or tools, ultimately unsuccessfully.<p>To this day, I think that was when the light switch went off for me about math as a creative problem solving endeavor and not just a rote series of calculations.
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mamcx超过 11 年前
I have tough that education must be more integrated. Take for example, the Pythagoras theorem. Is a boring fact, with null use...<p>Wait!<p>If somebody tell me before that I can use it for get out of a jungle... I could have listen better.<p>The class could have started like this:<p>&quot;You were traveling in plane, when suddenly, it crashed. Nobody else survived. You don&#x27;t know where you are. It look like a jungle. Not civilization around, no cellphone, nothing. You will die in 1 week if not reach civilization. How can you escape?&quot;<p>And if in history (at the same time that in maths) we talk about the man (Pythagoras), and about the compass. Then in social about the problems in traveling in the ancient cultures. Geography about maps. In artist class (<i>&quot;Art&quot; class was more about technical diagrams for me, we never ever do oleo or similar stuff</i>), how draw maps and in spanish build histories about it. Then all the clases related to each other. Probably the math class must be the last of it, to make this build-up effective.<p>In short, all the classes connected around the <i>theme of the week</i> or what are we doing at the moment.
mullingitover超过 11 年前
This just made me remember the whole class struglling with Riemann sums in Calc II, and Russian professor yelling &quot;This is grade school calculus!&quot; at us. Apparently Russians do Calculus in grade school.
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hawkharris超过 11 年前
I remember reading a fun fact in an MIT faculty newsletter a few years ago: the amount of money that American students spend failing calculus — paying for the course and tutoring, then redoing it — is greater than the budget of Avatar (over $300 million).<p>Every year, our students spend the budget of a James Cameron film on failing to understand calculus...
analog31超过 11 年前
I taught a college pre-calc course for a short time. We had &quot;show your work&quot; exams, so I got to see how students solved problems. I think that many of them had been taught &quot;test taking skills&quot; in high school, including a method of finding answers to math problems by guess-and-try or process of elimination. Basically, their teachers had hacked the standardized testing process. (Probably including the AP exam).<p>Honestly, college math wasn&#x27;t much better. Rather than confronting them with critical thought, we simply replaced the old hack with a new one:<p>1. Recognize the &quot;form&quot; of the problem, corresponding to a section in the textbook.<p>2. Plug the parameters of the problem into an equation solvable by the method of that section.<p>3. Apply the method and write the answer.<p>When I realized this, I told my students about it.<p>There was a chapter on maxima and minima. But the only function they had learned was the quadratic, so all optimization problems boiled down to arranging things into a quadratic. The text had them graphing each quadratic. I decided it would be more interesting for the kids to see how we make our own formulas, so we derived one for the optimum of a quadratic function, and memorized it.<p>Now is this math or not? Well, I think there&#x27;s a place in math that involves classifying the forms of expressions and equations, sort of like taxonomy in biology. But it shouldn&#x27;t be the only thing.
6d0debc071超过 11 年前
Any good books, or online resources, people can recommend on <i>actually</i> doing maths for people from a non-maths background?<p>I mean this is an old refrain, and not one I disagree with, but it&#x27;s missing the positive side of the argument.
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Pxtl超过 11 年前
I have to disagree with this.<p>For example, he attacks geometric proofs. Obviously, geometric proofs are useless and pointless, except that they represent a very simple and intuitive sandbox for learning proofs. Which is fantastic. How better would you teach kids to understand what math <i>means</i> beyond arithmetic? You give them a bunch of simple rules that make obvious sense, and then show them how you can use those to prove non-obvious things.<p>Our curriculum has all but dropped geometric proofs and the kids are poorer for it.<p>I think our curriculum here in North America (I&#x27;m in Ontario, but I imagine Americans have very similar classes) is fine - the problem is that people are afraid to make the problems really hard and force the students to really stretch their skills beyond just &quot;same as the example but change the numbers&quot;. That&#x27;s what&#x27;s missing, not some esoteric subject matter, just taking the existing tools in the existing toolbox and pushing the kids to build <i>higher</i> instead of <i>more</i>.
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primitivesuave超过 11 年前
Jeremy has put together some of the best graph theory educational notes, and I refer to his website a lot when I&#x27;m trying to show teachers how to infuse something abstract and meaningful into their traditional mathematics education. I highly recommend checking out his work, he really exemplifies modern mathematical education.
gboudrias超过 11 年前
Well, I sure wish this article had more explaining of what we should actually teach, instead of &quot;go read this other article&quot;. I was waiting for the point but it wasn&#x27;t there.
graycat超过 11 年前
Nonsense. I did four years of math in high school, and it really was &#x27;math&#x27;. It wasn&#x27;t all research or &#x27;critical thinking&#x27;, but I didn&#x27;t memorize &quot;steps&quot; either -- I have an awful &#x27;rote&#x27; memory, at least without some oral hints.<p>And I did fine with math later on, in including my Ph.D. in applied math (stochastic optimal control) and peer reviewed publications in applied math -- with theorems and proofs.<p>The OP has a small point but takes it way, way too far.
asperous超过 11 年前
This may be true but personally I have found that the mathematics I was taught was good enough for most purposes.<p>People learn how to drive a car by doing it. They aren&#x27;t encouraged to discover the laws of combustion or shown the magic of kinematics. They just learn how to press the petals.
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baddox超过 11 年前
Interestingly, I observed that the inverse seemed to be true in college (I was a computer science major). People (mostly math majors) who were <i>very good</i> math students, meaning they breezed through the college calc courses, struggled when we met again in more CS-relevant classes like Discrete Mathematics and Algebraic Structures. It should be troubling to any educator to see people excel at Calc 2 integrations, yet struggle to accomplish much simpler (at least to me) tasks like proving that the product of two even integers is an even integer.
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joshontheweb超过 11 年前
I definitely felt like my grade school education did me a disservice in the math department. I liken it to learning grammar for 12 years without ever writing an essay.<p>This is why I think programming should be taught starting in elementary school. It gives you an application for the math you need to learn. I never cared about learning algebra, calculus, or trigonometry until I started programming. Now I wish I had paid attention and now I am going back and self educating on the subjects in order to empower my programming.
brg超过 11 年前
Other&#x27;s have pointed this out already, but there is a need for everyone to learn symbol manipulation, geometric representation, and 5 line arguments before mathematics mastered. Saying that this is not part of a complete mathematics education is saying that grammar and vocabulary are not part of an English education.<p>And yes, my school did mathematics in high school. We went through much of Euclid&#x27;s Elements.
Imagenuity超过 11 年前
My college experience was that teachers taught how to pass exams, as described in the article. But when asking the teacher <i>how</i> the math worked, they were unable to <i>because they learned and were trained through the same system.</i> They didn&#x27;t &#x27;do&#x27; math or know math. They didn&#x27;t possess the deeper understanding I was looking for someone to explain.
nayefc超过 11 年前
The assumption that&#x27;s explaining why high schools in America SUCK: &quot;freshman calculus course&quot;.<p>In my school and country, we take calculus 1 &amp; 2 in grade 11; that&#x27;s two years before we go to college. In grade 12, we take differential equations.
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skywhopper超过 11 年前
He&#x27;s spent <i>20 hours</i> doing one-off lectures to high school math students, and he believes he&#x27;s an expert teacher? He seems to have an interesting approach and can get the students intrigued, but giving an interesting hour-long presentation and teaching a high school class for a full year are very different things.<p>I&#x27;m not trying to be cynical or discouraging, but dial back the certainty in your genius methods a couple of notches until you&#x27;ve done more than just gotten kids interested for an hour.
xupybd超过 11 年前
I love this article. I hated &quot;Math&quot; in school, loved in at university. Why don&#x27;t they teach real Math at school?
andrewcooke超过 11 年前
wish i&#x27;d known about this earlier. when i didn&#x27;t get something i assumed i had to work harder. didn&#x27;t realise i was supposed to blame the teacher. damn.
xname超过 11 年前
I don&#x27;t like this kind of claim. Even calculation of 1+1 is math. To be constructive, instead of claiming what students learnt is not math (which actually is math), please articulate what you think needs to be added to high school math. However, please be aware that not everyone is expected to learn calculus after high school.
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benihana超过 11 年前
I wish I would have known this in high school and college. I was convinced I sucked at math because I did poorly on math tests. It wasn&#x27;t until I started programming that I realized I <i>was</i> good at math; I was just bad at the chickenshit busy work they made us do in high school algebra and geometry.