Math Teacher, sci-fi/fantasy fanboy, puts salt on watermelon, green jello enthusiast
Kalamazoo
Joined September 2010
- Tweets2.9K
- Following1.9K
- Followers354
- Likes26.9K
Pinned Tweet
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.
⚾️ Kelly DeRango retweeted
Sometimes a "booster shot" is necessary in math education. Whether that serves MTSS models, weak Tier 1 core instruction, or schools in need of more practice, fluency, and time in Direct Instruction (DI), this is a universal concern!
Those materials are being developed:
⚾️ Kelly DeRango retweeted
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
⚾️ Kelly DeRango retweeted
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
⚾️ Kelly DeRango retweeted
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 ⚾️ 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?”
This is so cool! @mathhombre @mathillustrated
⚾️ Kelly DeRango retweeted
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
⚾️ Kelly DeRango retweeted
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.
⚾️ Kelly DeRango retweeted
Brief but Spectacular testimony on teacher burnout from @NewsHour youtube.com/watch?v=Aj_UWp8Y… But this is more Frustrating and Heartbreaking.
⚾️ Kelly DeRango retweeted
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…
⚾️ Kelly DeRango retweeted
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…
⚾️ Kelly DeRango retweeted
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?
⚾️ Kelly DeRango retweeted
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.)
⚾️ Kelly DeRango retweeted
@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?
⚾️ Kelly DeRango retweeted
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.
