one of my favorite follows on bluesky

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...

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

This is a good thread by one of my "trusted sources," @polotek.bsky.social.

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.

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 ♾️

I’m here.

With inverted contrast. www.desmos.com/calculator/p...

Can't wait!

Enjoyed re-creating this visual in the @desmos.com Geometry tool: www.desmos.com/geometry/lx7... #mathsky

(a) stunning visual. (b) any differential geometers able to weigh in?

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.

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

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).

🗣️ new PWYM just dropped

Sniped me, too. thefiddler.substack.com/p/did-xkcd-g...

got fully nerd-sniped by this and built a general dice rolling simulator using recursion in Desmos: www.desmos.com/calculator/e...

Any #washingtonspirit fans on here? Rise Up! DC!

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

Learning about quadratics at #AMTNJ. Great conference so far

Wow, I had no idea about this stat. The whole thread is gold.

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

Our 5th Annual Math Art Expo is open for business!! More here: blog.desmos.com/articles/art...

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

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/...

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!

You have to appreciate somebody who names his math book "The Great Art," though. #desmos #mathsky #physics #mathart #iteachmath

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.

Feeling paralyzed about things to do to help everyone vote next week? Here's a few ideas: * Advocate for your company to make Election Day a holiday! * Help people fix rejected ballots ("ballot curing"): www.mobilize.us/crooked/even... * Check your registration: www.vote.org Other ideas?

Geometry is best enjoyed dynamically, and now the tokens in Desmos Geometry can be, too. Keep up-to-date on new features like these on the Desmos What's New page: help.desmos.com/hc/en-us/art... #🧮 #MathEd

Tried making this with @desmos.bsky.social's new recursion feature. Pretty slow with 10k points, but fun effects even with 500: www.desmos.com/calculator/r...

I need a few hours to just start exploring all the 2023 Desmos Art Competition graphs! They are all amazing! It's also really cool to see how all of the new features are being used in such creative and delightful ways. www.desmos.com/art @desmos.bsky.social

Maybe this one will? www.desmos.com/calculator/s...

The @desmos.bsky.social calculator just got way cooler with the tone feature! In this graph you can write and record music just by pressing the keys on a piano. www.desmos.com/calculator/e... What tunes will you compose in this graph? 🎶 #Desmos #iTeachMath

I’m having trouble getting the Desmos audio to work. Can someone help me take a look at this? #iTeachPhysics 🎢 www.desmos.com/calculator/t...

Excited for the @desmos.bsky.social art contest! #mtbos #iteachnath #edusky blog.desmos.com

So it seems like more of the #iteachmath community is here, awesome. In an effort to connect with each other and create a sense of community: 1) Share your current role 2) Share a highlight of the past couple of months 3) make sure you put #iteachmath Let's grow this community!!!

Some therapeutic spirals in #Desmos 3D. www.desmos.com/3d/0bdf71e576

Let's #Crowdsource some data with the new @Desmos geometry app in this @desmosclassroom activity. C'mon! This will take less than 1 minutes. Unless you dig into the data later... student.desmos.com/join/gedng2

#iteachphysics I attempted to implement the equations of motion for a compound (equal length and mass) pendulum from wikipedia into this 3D Desmos simulation. You set the range of release angles and number of pendula. The path of the first and last pendula are plotted. www.desmos.com/3d/70e585e2c7

Playing around with the "impossible cube" in Desmos 3D. Graph: www.desmos.com/3d/52f2f13aaa

My charged particle in a magnetic field simulator in 3D Desmos, now much improved thanks to @danhosey.bsky.social #iTeachPhysics www.desmos.com/3d/d174350dda

It turns out that the new Desmos 3D can show vector arrows and has a built-in cross-product operator. The d/dx and d/dy functions successfully compute partial derivatives. Great for plotting surface-normal vectors #iteachmath ♾️ Animated gif: media.giphy.com/media/iqLTC6... desmos.com/3d/4468e57dba

Showing off my Desmos skills by translating my favorite 3D model, the Utah teapot, into their new 3D engine. www.desmos.com/3d/eb1ea96022

Later this week, I'm seeing my first physics professor, who taught mechanics and them E&M. Made this for the occasion: www.desmos.com/3d/dbd22da284. Any ideas for other fun #physics graphs?

#Physics Desmos 3D calculator just came out in beta form. Having some fun playing with multiple conical pendula at varied speeds. desmos.com/3d/4c463a918b

Lol, I was just thinking that I'd had forgotten... www.desmos.com/3d/a1ff0cb42a

Link to projectiles: www.desmos.com/3d/b56b7236e1

📢 📢 📢 Desmos 3D is here!📢 📢 📢 ♾️🎢🍎Let's make some cool stuff! Link: www.desmos.com/3d

#Desmos in 3D ! Check it out ! www.desmos.com/3d