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Eli Luberoff

@eluberoff.bsky.social
1.2K followers 298 following 110 posts

CEO of Desmos Studio PBC

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Eli Luberoff @eluberoff.bsky.social · 20/08/2026
This is such a good book.
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NCSM: Leadership in Mathematics Education @mathedleaders.bsky.social · 15/08/2026
Eli Luberoff, founder of Desmos Studio, is coming to #NCSM2026 in Denver! Join him and explore who is doing the mathematical thinking in our classrooms. See you October 26-28! Register: mathedleadership.org/conference
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gamera obscura @ohrobin.bsky.social · 27/06/2026
This Danville, VA city council candidate made a very dramatic video about sidewalks and public safety, and I love it and him. Worrying about a possible milkshake duck situation, I looked at his FB page, but he seems ok. Juneteenth celebrations, community outreach, Methodists. A solid old gent.
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Inigo Quilez @iquilezles.bsky.social · 27/06/2026
I made a video about the smooth-maximum function, I hope you like it! youtu.be/6Qb6QtC6QMs
youtu.be
A function you cannot do without
YouTube video by Inigo Quilez
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sea-saw @sea--saw.bsky.social · 22/06/2026
Sheep 🐑 in Desmos 3D www.desmos.com/3d/pws9ivnvdb #desmos #mathart #mathplay
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Catriona Agg @catrionaagg.bsky.social · 30/05/2026
An equilateral triangle inside a regular hexagon. What’s the angle? #geometrypuzzle
A hand drawn image of a green regular hexagon with a line across the middle. A purple equilateral triangle shared a vertex with the hexagon, and has another vertex on the line across the hexagon’s middle. A blue line from the third vertex of the triangle joins to the next vertex of the hexagon to make an unknown angle with the side of the hexagon.
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Citizen Math @citizenmath.bsky.social · 07/05/2026
There was Mathalicious v1.0 and Citizen Math v2.0. Today we launched Version Free Point Ooh. 🩵 www.citizenmath.com If you loved our real-world lessons but got tired of administrative funding whims determining your access, welcome back. I think you'll like it here. #EduSky #MathSky #RealWorldMath
citizenmath.com
Welcome to Citizen Math
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Eli Luberoff @eluberoff.bsky.social · 07/05/2026
.@citizenmath.bsky.social (citizenmath.com) just did something wild. The entire library -- every one of their thoughtfully, beautifully crafted lessons -- is now free.
citizenmath.com
Welcome to Citizen Math
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sea-saw @sea--saw.bsky.social · 07/04/2026
Succulents 🌵 in Desmos 3D www.desmos.com/3d/phsxf7axqp #desmos #mathart #mathplay
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Eli Luberoff @eluberoff.bsky.social · 06/04/2026
I absolutely love this from @prospect.org. Worth a read (and a subscribe!) prospect.org/2026/04/06/w...
prospect.org
Why We’re Removing Our Programmatic Ads - The American Prospect
Online advertising is bad for users, publishers, and even advertisers. The only beneficiaries are the Big Tech platforms. We’re doing something about it.
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Tom Button @tombutton.bsky.social · 09/03/2026
Here you go: www.desmos.com/calculator/9...
desmos.com
arsinhx
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The Onion @theonion.com · 28/02/2026
This War Will Destabilize The Entire Mideast Region And Set Off A Global Shockwave Of Anti-Americanism vs. No It Won’t
theonion.com
This War Will Destabilize The Entire Mideast Region And Set Off A Global Shockwave Of Anti-Americanism vs. No It Won’t
George W. Bush may think that a war against Iraq is the solution to our problems, but the reality is, it will only serve to create far more.
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Annie loves Mpls @anniekp.bsky.social · 27/02/2026
You have ~24 hours to get your entries in to win these mittens!
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Howie Hua @howiehua.bsky.social · 23/02/2026
It's Mental Math Monday with the creator of Desmos, @eluberoff.bsky.social! With the digits 1, 1, 2, and 3, how many different 4-digit numbers can you create? Also bonus question: What holiday was Desmos released on?
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Annie loves Mpls @anniekp.bsky.social · 31/01/2026
Help MN and maybe win these mittens! I’ll draw a name 2/1, so get me your name by 7pm central tomorrow. Every $5 you give to mutual aid and every phone call to your reps is an entry. Email a pic of your receipt/call to mplsAngryMittens@proton.me
Light and dark Purple mittens with a middle finger knit into the pattern. The other side. Same light and dark purple  but a less sweary pattern of little checks.
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Eli Luberoff @eluberoff.bsky.social · 30/01/2026
Has this been a soul-searching moment for the fact-checking industry? Everything Harris says came, or is coming, true. And so much of it was labeled as "misleading" or "lacking context" at the time, on the grounds of "but he said he wouldn't!" (see, e.g. www.npr.org/2024/08/25/g... from @npr.org)
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Adam Serwer @adamserwer.bsky.social · 27/01/2026
Last week in Minnesota, I watched ordinary people risk their lives to protect their neighbors. In the process, they not only won a significant—though not final—victory against authoritarianism, they proved virtually every MAGA social theory wrong. (gift link) www.theatlantic.com/ideas/2026/0...
Every social theory undergirding Trumpism has been broken on the steel of Minnesotan resolve. The multiracial community in Minneapolis was supposed to shatter. It did not. It held until Bovino was forced out of the Twin Cities with his long coat between his legs.

The secret fear of the morally depraved is that virtue is actually common, and that they’re the ones who are alone. In Minnesota, all of the ideological cornerstones of MAGA have been proved false at once. Minnesotans, not the armed thugs of ICE and the Border Patrol, are brave. Minnesotans have shown that their community is socially cohesive—because of its diversity and not in spite of it. Minnesotans have found and loved one another in a world atomized by social media, where empty men have tried to fill their lonely soul with lies about their own inherent superiority. Minnesotans have preserved everything worthwhile about “Western civilization,” while armed brutes try to tear it down by force.
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Annie loves Mpls @anniekp.bsky.social · 24/01/2026
If you want to help, these funds will directly help families in Minneapolis pay rent. bit.ly/singMSPrent
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Christopher Danielson @triangleman.bsky.social · 24/01/2026
To 10 above, just so we’re clear!
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Nicole Foy @nicolefoy.bsky.social · 13/01/2026
Immigration agents are choking people in America's streets & using tactics against their own policy/training. Many LEO agencies have banned their use A Colombian TikToker. An ICU nurse. A father holding his child. A 16-year-old citizen DHS calls this "utmost professionalism" w/ @mckenziefunk.com
propublica.org
We Found More Than 40 Cases of Immigration Agents Using Banned Chokeholds and Other Moves That Can Cut Off Breathing
Civilians have had apparent seizures. One had his eyes roll back. Another had ribs broken. “I felt like I was going to pass out and die,” said a 16-year-old citizen put in a chokehold. The government ...
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Graph Time with Sara and Sean @graphtimesarasean.bsky.social · 10/10/2025
How we animate in Desmos, Episode 3 of Graph Time with Sara and Sean is here! youtu.be/PtrHw9-AFWQ
youtu.be
How we animate in Desmos, Episode 3
YouTube video by Graph Time with Sara & Sean
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Eli Luberoff @eluberoff.bsky.social · 29/05/2025
one of my favorite follows on bluesky
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JW Mason @jwmason.bsky.social · 29/05/2025
During the pandemic, the US implemented the most effective social welfare policies in our history -- programs that worked because they were big enough, simple, and universal. And then we withdrew them. This remains imo the central economic-policy story of our times. davisvanguard.org/2025/05/3hou...
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Michael Hobbes @michaelhobbes.bsky.social · 29/03/2025
We have had nearly two decades of panic about Free Speech on Campus and not a single case, not even the ones they made up, were as bad as what's happening now
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Eli Luberoff @eluberoff.bsky.social · 26/03/2025
This is a good thread by one of my "trusted sources," @polotek.bsky.social.
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Marco Rogers @polotek.bsky.social · 26/03/2025
So. I think it's important to share news about what's happening. But I'm trying to square that with the other reality that it contributes to doomscrolling. I think we need to start putting these things into context and talking about what we are learning or what we should take away from it.
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benjamin dickman @benjamindickman.bsky.social · 17/12/2024
post a 🚨 spoiler 🚨 iff you've never seen this!! write f() for the floor function i.e. round down to an integer and d() for the divisor function i.e. # of divisors Consider 5: f(5/1)+f(5/2)+f(5/3)+f(5/4)+f(5/5) = 5+2+1+1+1 = 10 d(1)+d(2)+d(3)+d(4)+d(5) = 1+2+2+3+2 = 10 Coincidence? #iTeachMath ♾️
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Ida Bae Wells @nhannahjones.bsky.social · 15/12/2024
I’m here.
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David Andersson @dvdndrssn.bsky.social · 12/12/2024
With inverted contrast. www.desmos.com/calculator/p...
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Eli Luberoff @eluberoff.bsky.social · 12/12/2024
Can't wait!
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Tim Guindon @tguindon.bsky.social · 11/12/2024
Enjoyed re-creating this visual in the @desmos.com Geometry tool: www.desmos.com/geometry/lx7... #mathsky
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Eli Luberoff @eluberoff.bsky.social · 08/12/2024
(a) stunning visual. (b) any differential geometers able to weigh in?
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NE Ohio Regional Sewer District @neorsd.org · 08/12/2024
according to @merriam-webster.com the first usage of the word “sewerage” dates back to 1834. other words first used that year include humoristic, optimistic, and self deprecating, and i feel like that explains so much.
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Matt Enlow @unsolvedmre.bsky.social · 05/12/2024
Can you find a Pythagorean Triple containing... • exactly one multiple of 5? • exactly two multiples of 5? • three multiples of 5? • no multiples of 5? Any conjectures? #iTeachMath #MathSky
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Daniel Scher @danielscher.bsky.social · 02/12/2024
Contrary to what you might have heard, desktop Sketchpad is alive and well. Free for Apple Silicon Macs (here: gsptest.scratchconsortium.com/index.html) and Windows (DM me).
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benjamin dickman @benjamindickman.bsky.social · 02/12/2024
🗣️ new PWYM just dropped
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Zach Wissner-Gross @xaqwg.bsky.social · 30/11/2024
Sniped me, too. thefiddler.substack.com/p/did-xkcd-g...
thefiddler.substack.com
Did xkcd Get Its Math Right?
The popular webcomic recently made a joke involving combinatorial mathematics. But did the math actually check out? For Extra Credit, can you find other ways the joke could have been delivered?
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Eli Luberoff @eluberoff.bsky.social · 30/11/2024
got fully nerd-sniped by this and built a general dice rolling simulator using recursion in Desmos: www.desmos.com/calculator/e...
desmos.com
Dice Rolling simulator
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Eli Luberoff @eluberoff.bsky.social · 23/11/2024
Any #washingtonspirit fans on here? Rise Up! DC!
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Marilyn Burns @mburnsmath.bsky.social · 20/11/2024
My first BlueSky post! Today I taught a division lesson about how a problem can have different right answers. I'll blog soon. www.marilynburnsmath.com
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Eli Luberoff @eluberoff.bsky.social · 22/11/2024
Learning about quadratics at #AMTNJ. Great conference so far
A quadratic card sort equation on a projector
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Eli Luberoff @eluberoff.bsky.social · 18/11/2024
Wow, I had no idea about this stat. The whole thread is gold.
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Desmos Studio @desmos.com · 15/11/2024
It's here.✨ Head to desmos.com/art to learn more, and be sure to submit your graphs by January 15th, 2025! #MathSky #iTeachMath #iTeachPhysics #mathart #desmosart
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Eli Luberoff @eluberoff.bsky.social · 15/11/2024
Our 5th Annual Math Art Expo is open for business!! More here: blog.desmos.com/articles/art...
blog.desmos.com
2024 Desmos Studio Math Art Expo - Des-blog
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Anna Clark @annaleighclark.bsky.social · 11/11/2024
Ever more ProPublicans are on here now! 🕵️🔎 If you already followed this starter pack, it's worth checking in again to see who is newly added. go.bsky.app/RkNqWmw
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Eli Luberoff @eluberoff.bsky.social · 04/11/2024
States that let you register and vote on election day: California Colorado Connecticut D.C. Hawaii Idaho Illinois Iowa Maine Maryland Michigan Minnesota Montana Nevada New Hampshire New Mexico Rhode Island Utah Vermont Virginia Washington Wisconsin Wyoming www.rockthevote.org/how-to-vote/...
rockthevote.org
Same Day Voter Registration - Rock the Vote
Find out which states offer same day voter registration.
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Eli Luberoff @eluberoff.bsky.social · 04/11/2024
Voted by mail? Check your vote status (google "vote status" + state). Voting in person? Check your registration (vote.org). I once thought I was registered and wasn't. I once had a mail-in vote not accepted the first time. It happens. Already did? text 5 friends a reminder to check theirs!
Ballot received: 10/29/2024.
Status: accepted
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Desmos Studio @desmos.com · 30/10/2024
You have to appreciate somebody who names his math book "The Great Art," though. #desmos #mathsky #physics #mathart #iteachmath
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Eli Luberoff @eluberoff.bsky.social · 30/10/2024
Don't love this editorial choice... Here's the photo the @washingtonpost.com chose to show the overflow "crowd" at tonight's rally, alongside a photo I took of the same monument at the same rally.
"Overflow crowds listen to Harris's speech from National Mall" with a picture of a few dozen people sitting on a wallSame monument, same rally, showing the real (enormous) overflow crowd
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