iiinova — where your digital self keeps evolving

Eli Luberoff @eluberoff.bsky.social · 04/10/2026

Wow, I love this graph. I made it faster by taking some of the implicit plots (which have to sample over the entire 2d space) and instead sampling the endpoints and connecting them with parametrics: www.desmos.com/calculator/m...

desmos.com

Basis vectors

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Eli Luberoff @eluberoff.bsky.social · 02/10/2026

lol I gotchoo. Email me? eli[at]desmos.com :)

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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 october edition @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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Eli Luberoff @eluberoff.bsky.social · 22/05/2026

that's awesome. send us any feedback / bugs / requests they have :) early days!

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Eli Luberoff @eluberoff.bsky.social · 22/05/2026

Big fan of Vernier everything as well :) great calls.

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Eli Luberoff @eluberoff.bsky.social · 22/05/2026

100% agreed on good CSV support!

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Eli Luberoff @eluberoff.bsky.social · 22/05/2026

only took us a couple years 😆. This is very much beta, so definitely let us know anything you'd like to see from it (and any bugs...)

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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

What they've made is beautiful. The way they've made it is also beautiful, even if it hasn't been easy. No big VC or private equity backers. But the payoff, for everyone, is that they're actually able to do something bananas like make every lesson free without asking permission. What a gift.

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Eli Luberoff @eluberoff.bsky.social · 07/05/2026

I've always been inspired by Karim, Ginny, and the whole team behind Mathalicious / Citizen Math over the years. Sometimes they've swum with the current, sometimes upstream, but it's always been the current that's changed rather than their values.

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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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Eli Luberoff @eluberoff.bsky.social · 21/04/2026

I LOVE custom tools in sketchpad (didn't play with Cabri as much, but huge respect for them as well)

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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 · 25/03/2026

totally makes sense to me to want sliders at the top -- I wonder if there's a feature focused just on that, especially since sliders are so tall

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Eli Luberoff @eluberoff.bsky.social · 24/03/2026

really like this idea! challenge becomes if the scrollable area gets too small (already tricky if the keypad is open e.g. on a phone). What kinds of things do you think you want to keep at the top most often? Is this like computed variable values? How many of them?

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Eli Luberoff @eluberoff.bsky.social · 21/03/2026

whoaa this is still going? if not, should we resurrect it somehow?

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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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Eli Luberoff @eluberoff.bsky.social · 08/03/2026

whoa I didn't know this. That's beautiful.

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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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Eli Luberoff @eluberoff.bsky.social · 26/02/2026

Not sure if this is what you're looking for, but you're welcome to use the Desmos API for free for personal + non-commercial! see www.desmos.com/my-api

desmos.com

Desmos | My API

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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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Eli Luberoff @eluberoff.bsky.social · 10/02/2026

same, but hopefully not for too much longer! also, that hack is awesome...

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Eli Luberoff @eluberoff.bsky.social · 08/02/2026

I'm at eli[at]desmos.com if we can help with the update. It's worth it, I hope - lots of improvements and no extra cost. More here: www.desmos.com/api/changelog

desmos.com

Desmos API Change Log

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Eli Luberoff @eluberoff.bsky.social · 08/02/2026

Quick follow up here - we updated the message to be less garish (standard console.warn now). Very sorry + grateful for bringing that to my attention. We also should only be showing this if 3 or more major releases (so 3+ years) out of date. please let me know if it's showing when it shouldn't!

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Eli Luberoff @eluberoff.bsky.social · 05/02/2026

Again though, frustration heard. We always try to keep in close contact with partners to make sure we don't get out of sync like this, and it sounds like we missed the mark here. I'm eli[at]desmos.com if I can help with this (or anything else, at any point).

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Eli Luberoff @eluberoff.bsky.social · 05/02/2026

(3) we only do this console if it's more than a year out of date (fwiw: our contracts always include a commitment to upgrade within a few months of each release. We don't enforce that, obviously, but it is a commitment for the above reasons)

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Eli Luberoff @eluberoff.bsky.social · 05/02/2026

(2) One reason for all of this is that we're constantly fixing small browser-compatibility things, improving accessibility, etc, and our team is way too small to support backports to arbitrarily old API versions. We commit to support the current and one prior, but further back than that is tough.

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Eli Luberoff @eluberoff.bsky.social · 05/02/2026

A few small details that might help: (1) updating should just be switching a v1.* to v1.11 somewhere. We work really hard at backwards compatibility so it should take no work past that, and there's no cost to upgrade to our latest version.

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Eli Luberoff @eluberoff.bsky.social · 05/02/2026

So sorry about the nuisance here, Chris! Which company are you with? I'm happy to help update however I can, and feedback received that a console warning feels unfriendly (we didn't want anything user facing).

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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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Eli Luberoff @eluberoff.bsky.social · 12/12/2025

I love this broken calc puzzles idea 😍. I think that turning off functions should be kind of straightforward, but turning off numbers and operations could be tricky... I imagine if "2" is broken you couldn't type "12" also, but what about if * is broken, should we break implicit multiplication too?

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Eli Luberoff @eluberoff.bsky.social · 08/12/2025

We've been talking about this one! Very hard to implement the general case in a way that'll work performantly with the rest of our system, but we're going to see what we can do.

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Eli Luberoff @eluberoff.bsky.social · 04/12/2025

wow I've never seen it presented like that. that's gorgeous.

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Eli Luberoff @eluberoff.bsky.social · 04/12/2025

Love this idea! It's a tricky one to do in general because to render arbitrary opacities can be a performance nightmare (the leading technique, depth peeling, can be incredibly computationally intensive with many layers of low opacity surfaces). But we're working on it :)

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Eli Luberoff @eluberoff.bsky.social · 04/12/2025

There was so much confusion of people thinking that Desmos was all part of Amplify, sending us support requests about parts that we don't have any control over etc, and it was actually making things kind of hard for Desmos Studio (and I imagine for Amplify as well on the other side)

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Eli Luberoff @eluberoff.bsky.social · 04/12/2025

I wasn't involved in that decision, but one benefit is that it's now so much clearer which parts are Desmos (e.g. the calculators and everything else at desmos.com) and which parts are Amplify (e.g. activity builder etc, now at classroom.amplify.com)

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