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Math Intuition Cheatsheet

betterexplained.com

11–20 of 68 posts

Re: Math Intuition Cheatsheet

#11

I'd read Yudkowsky's popular "An Intuitive Explanation of Bayes' Theorem" as well as a few others, but the article on this site made me feel like I actually understood it for the first time. The examples were clever, short, and simple, while still demonstrating how powerful Bayes' Theorem can be. The concise explanations here seem more helpful than semester-long university courses I've taken. I definitely look forwar…

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Re: Math Intuition Cheatsheet

#12
I really like this cheatsheet, it is very inspiring actually. You should consider doing a version written for elementary school aged kids. You need to get buy in while they are still young!

Re: Math Intuition Cheatsheet

#13

I am often saddened by how much easier it has been for me to acquire computer science versus mathematical literacy. Embarrassingly, years after a poorly-timed calculus course left me thinking I had to be able to prove the central limit theorem in order to use calculus, the biggest barriers have turned out to be things programming as a discipline has learned to avoid; encouraging varied and/or terse notations, opaque…

To be fair, we drag around (and rigorously defend) many bad artifacts of past programming languages. Case sensitivity? Double-equals-sign for testing equality?

But still, programming seems far more willing to fix mistakes than hard sciences/math. We've been clanking around with Pi instead of Tau for how many centuries?

Re: Math Intuition Cheatsheet

#14
post #12

I really like this cheatsheet, it is very inspiring actually. You should consider doing a version written for elementary school aged kids. You need to get buy in while they are still young!

Thanks! I'd love to do more elementary school topics. I still encounter revelations about things like basic counting (fencepost problem) and arithmetic.

My meta goal is to raise people's standards for what it means to understand something. ("If it didn't click, I should keep looking for a better explanation." vs. "It didn't click, I'm no good at this.")

Re: Math Intuition Cheatsheet

#15
post #13

I am often saddened by how much easier it has been for me to acquire computer science versus mathematical literacy. Embarrassingly, years after a poorly-timed calculus course left me thinking I had to be able to prove the central limit theorem in order to use calculus, the biggest barriers have turned out to be things programming as a discipline has learned to avoid; encouraging varied and/or terse notations, opaque…

To be fair, we drag around (and rigorously defend) many bad artifacts of past programming languages. Case sensitivity? Double-equals-sign for testing equality? But still, programming seems far more willing to fix mistakes than hard sciences/math. We've been clanking around with Pi instead of Tau for how many centuries?

When I took my first programming course, one of things I was most surprised by was case sensitivity. It's kind of funny thinking about it now my perspective is entirely different -- "D" and "d" aren't the same value so why would they mean the same thing?

Is case sensitivity a bad artifact? It doesn't seem like it is to me anymore, but my former self sure thought so.

Re: Math Intuition Cheatsheet

#16
post #8

I am often saddened by how much easier it has been for me to acquire computer science versus mathematical literacy. Embarrassingly, years after a poorly-timed calculus course left me thinking I had to be able to prove the central limit theorem in order to use calculus, the biggest barriers have turned out to be things programming as a discipline has learned to avoid; encouraging varied and/or terse notations, opaque…

(Kalid from BetterExplained here) Thanks for the comment. There's this weird notion in Calculus education that we need to start from first principles. Limits were invented a century after Newton died, yet they're taught first. "Oh, students won't understand calculus unless they can build it from first principles. I don't care if Newton worked out gravitation with his understanding, it's not good enough." My little ca…

Kalid, I just read your article on Prime numbers (not-quite randomly selected from the homepage). I just wanted to say how well written I found it - even beyond the technical side of things, your writing style, tone, and humility ("if I didn't mess it up") are fabulous.

Re: Math Intuition Cheatsheet

#17
post #15
post #13

Earlier quoted context omitted.

To be fair, we drag around (and rigorously defend) many bad artifacts of past programming languages. Case sensitivity? Double-equals-sign for testing equality? But still, programming seems far more willing to fix mistakes than hard sciences/math. We've been clanking around with Pi instead of Tau for how many centuries?

When I took my first programming course, one of things I was most surprised by was case sensitivity. It's kind of funny thinking about it now my perspective is entirely different -- "D" and "d" aren't the same value so why would they mean the same thing? Is case sensitivity a bad artifact? It doesn't seem like it is to me anymore, but my former self sure thought so.

Salesforce's Apex language is case insensitive. It leads to a a lot of confusion, frustration, and distress when different programmers have their personal preferred style of referring to a class or var or when the lazy ones just write everything in lowercase. Never again.

Re: Math Intuition Cheatsheet

#18
post #8

Earlier quoted context omitted.

(Kalid from BetterExplained here) Thanks for the comment. There's this weird notion in Calculus education that we need to start from first principles. Limits were invented a century after Newton died, yet they're taught first. "Oh, students won't understand calculus unless they can build it from first principles. I don't care if Newton worked out gravitation with his understanding, it's not good enough." My little ca…

Kalid, I just read your article on Prime numbers (not-quite randomly selected from the homepage). I just wanted to say how well written I found it - even beyond the technical side of things, your writing style, tone, and humility ("if I didn't mess it up") are fabulous.

[deleted]

Re: Math Intuition Cheatsheet

#19
post #8

Earlier quoted context omitted.

(Kalid from BetterExplained here) Thanks for the comment. There's this weird notion in Calculus education that we need to start from first principles. Limits were invented a century after Newton died, yet they're taught first. "Oh, students won't understand calculus unless they can build it from first principles. I don't care if Newton worked out gravitation with his understanding, it's not good enough." My little ca…

Kalid, I just read your article on Prime numbers (not-quite randomly selected from the homepage). I just wanted to say how well written I found it - even beyond the technical side of things, your writing style, tone, and humility ("if I didn't mess it up") are fabulous.

Thank you Jacob, I really appreciate it. I try to imagine that I'm writing to a younger version of myself, who hasn't seen the material yet. It helps me remove potential anxiety about not knowing everything, or trying to impress -- there's no reason to deceive yourself about what you do or don't know.

Re: Math Intuition Cheatsheet

#20
post #2

This is terrific. I'm mathy enough to know e to several places, and use it in programs occasionally, but if you'd asked me how it might be intuitively derived I'd have been at a loss. And that's just for something inside my comfort zone - the article on linear algebra is just as illuminating. This looks like it will be my commute reading for the week. But more than that it just makes me happy that it exists.

Same here. I always was super interested in mathematics and still am. To have this resource to learn about where it all "came from" and how it actually works is great. Will read it on my commute as well!
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