Another casualty of "set-builder notation." Is this really the best way to introduce graphs?pic.twitter.com/yD2lpbqUrP
This is the legacy version of twitter.com. We will be shutting it down on June 1, 2020. Please switch to a supported browser, or disable the extension which masks your browser. You can see a list of supported browsers in our Help Center.
Mathematical physicist and mentor to mathematically talented youth. Talent is that which bridges the gap between what can be taught and what must be learned.
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Add this Tweet to your website by copying the code below. Learn more
Add this video to your website by copying the code below. Learn more
By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.
| Country | Code | For customers of |
|---|---|---|
| United States | 40404 | (any) |
| Canada | 21212 | (any) |
| United Kingdom | 86444 | Vodafone, Orange, 3, O2 |
| Brazil | 40404 | Nextel, TIM |
| Haiti | 40404 | Digicel, Voila |
| Ireland | 51210 | Vodafone, O2 |
| India | 53000 | Bharti Airtel, Videocon, Reliance |
| Indonesia | 89887 | AXIS, 3, Telkomsel, Indosat, XL Axiata |
| Italy | 4880804 | Wind |
| 3424486444 | Vodafone | |
| » See SMS short codes for other countries | ||
This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.
Hover over the profile pic and click the Following button to unfollow any account.
When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.
The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.
Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.
Get instant insight into what people are talking about now.
Follow more accounts to get instant updates about topics you care about.
See the latest conversations about any topic instantly.
Catch up instantly on the best stories happening as they unfold.
Another casualty of "set-builder notation." Is this really the best way to introduce graphs?pic.twitter.com/yD2lpbqUrP
@gol_ad @stevenstrogatz The answer is clearly no. But in math ed, no one has ever aspired to (or even dared to imagine) an optimal approach.
@gol_ad @stevenstrogatz Indeed, optimality has always been considered so preposterously unattainable that only a crank would propose it.
@gol_ad @stevenstrogatz Math ed tacitly assumes that most students will neither enjoy nor master math. So why bother presenting it well?
@gol_ad @stevenstrogatz Those who can learn math will learn it, and those who can't, won't. No matter how it's taught. Simple as that.
@gol_ad @stevenstrogatz This is why textbooks like the one you picture exist. Their authors don't think it really matters how they write.
@gol_ad I was responding to Professor Strogatz's photo (and question.) Did you supply it to him?
@gol_ad Absolutely. Please accept my apologies for disturbing you.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.