Math Teacher, sci-fi/fantasy fanboy, puts salt on watermelon, green jello enthusiast
Joined September 2010
- Tweets 2,941
- Following 1,880
- Followers 354
- Likes 26,949
232 Photos and videos
Pinned Tweet
18 Dec 2022
Dad here - just knowing that your children are thinking of you and love you is enough. The gift is just a vehicle for this message.
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Here's an animation of a proof without words by Matt Hudelson showing the sum of the alternating harmonic series using a geometric technique
youtu.be/09bqRIkjQhk
@manim_community #math #mtbos #calculus #visualproof #infiniteseries
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⚾️ Kelly DeRango retweeted
16 Jun 2023
There are problems I would attach an infinitely greater importance than to those of mathematics,for example ethics,or our relation to God,or concerning our destiny and our future; but their solution lies wholly beyond us and completely outside the province of science.
Carl Gauss
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15 Jun 2023
✊🏳️🌈🏳️⚧️
15 Jun 2023
The newsroom is not standing for it.
Not only is it incredibly offensive to suggest Pride events be covered less than others -- the fact we were mandated to "curb our coverage" to appeal to a political belief goes against the very heart of what journalism is supposed to be.
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⚾️ Kelly DeRango retweeted
13 Jun 2023
What is the probability that a random permutation of {1,...,200} contains a cycle of length >100?
31%
≥50%
46%
<50%
23%
Idk / show results
996 votes • Final results
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⚾️ Kelly DeRango retweeted
Please stop dming the government at 1am.
ALT A screenshot of a dm we received a WHOLE NOTIFICATION OF WITH THE DING AND EVERYTHING says “Do you ever think about how deep the ocean is and get worried that there are like, continent size whales down there? Or does being landlocked kind of absolve that fear?”
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8 Jun 2023
This is so cool! @mathhombre @mathillustrated
8 Jun 2023
Check this out!
#iteachmath #iteachmaths
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⚾️ Kelly DeRango retweeted
8 Jun 2023
Journalists, please realize and deeply ponder that what we are experiencing on Earth is the real-time irreversible unraveling of habitability due to the sale and use of fossil fuels. And report accordingly
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⚾️ Kelly DeRango retweeted
7 Jun 2023
Good update from Quanta on math and gerrymandering. quantamagazine.org/how-math-… The danger is worse because the data can also be used for such devastating gerrymandering now.
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⚾️ Kelly DeRango retweeted
7 Jun 2023
Brief but Spectacular testimony on teacher burnout from @NewsHour youtube.com/watch?v=Aj_UWp8Y… But this is more Frustrating and Heartbreaking.
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⚾️ Kelly DeRango retweeted
31 May 2023
Bolstering its commitment to broad engagement, @CornellCAS has established the Winokur Professorship in the Public Understanding of Science and Mathematics. Mathematician @stevenstrogatz is the inaugural holder of the chair, endowed with a $5M gift. news.cornell.edu/stories/202…
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⚾️ Kelly DeRango retweeted
4 Jun 2023
I made some aperiodic tiling coloring book pages (hat/t-shirt, turtle, polygonal spectre, and curved spectre). I put them on my blog with links to the 3D-printable files as well. divisbyzero.com/2023/06/04/3…
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⚾️ Kelly DeRango retweeted
2 Jun 2023
Another serious techno puzzle that I am hoping is true, but can't prove. (Longing to be a number theorist!)
Let {r} = the fractional part of a real number r.
(Eg. {π}=0.141...)
Does ( {N/1} -{N/2} {N/3}- ... ±{N/N} ) /N approach 0 as N grows?
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⚾️ Kelly DeRango retweeted
19 May 2023
Suppose you have S different types of single tiles and D different types of double tiles. What's a general formula for the number of "trains" of length N you can make? (For S=1, D=1, it's Binet's formula.)
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⚾️ Kelly DeRango retweeted
15 May 2023
@PaulaKrieg @goldenxav has a long term sub job in HS foundations class. He's interested in a folding project, but doesn't feel qualified himself. Ideas on where to start?
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⚾️ Kelly DeRango retweeted
9 May 2023
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6 May 2023
Good quote from Terence Tao
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⚾️ Kelly DeRango retweeted
26 Apr 2023
Srinivasa Aiyanger Ramanujan was born in Erode, India in 1887, and #dotd in 1920. He was only 32. Ramanujan was one of those rare minds who managed to produce, within his short life, some of the most interesting mathematics we have seen.
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Learn some arithmetical magic tricks in this wonderful piece by J. Harris in Feb @maanow Math Horizons : doi.org/10.1080/10724117.202… (for a challenge start at this puzzle (doi.org/10.1080/10724117.202…). Did these with 1000
HSers last week and it went well! #math @neeratanden #magic
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⚾️ Kelly DeRango retweeted
21 Mar 2023
It's quite something that the world's top scientists put out a synthesis report that essentially says civilization as we know it will end unless the world comes together to stop rapidly expanding the fossil fuel industry but to instead rapidly end it, and almost no one cares
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