Jay Lang
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pi2infinity.bsky.social
Jay Lang
@pi2infinity.bsky.social
📡 STEM teacher, musician, boardgamer, recreational mathematician, options trader, programmer, astronomer, tinkerer, traveler, crossworder, lifelong learner
Normalize hanging flags out of your window that represent your immigrant heritage if for no other reason than to mess with teenagers who are trying to get better at Geoguessr.

Relatedly, my students this year are absolute, complete nerds.
November 7, 2025 at 3:16 PM
I was messing around, programming solutions to variations on the Pythagorean Theorem, and I found

10² + 11² + 110² = 111²

In fact, 100 + 121 + 12100 does equal 12321. Neato! But doesn't that also look like it's in binary? Hmmm...
October 9, 2025 at 2:03 PM
OY VEY, it’s 5786 but I’m still writing 5785 on all my checks! :0(
September 23, 2025 at 3:23 AM
“The last digit of pi in binary is 1, as trailing zeros are meaningless.” -Someone on Reddit.

Like, that’s not how math works. But also, I mean, there’s kiiiiiinda a bit of a draw to it, eh?

#mtbos #iteachmath #mathsky
September 15, 2025 at 2:20 AM
My friend Chris is a mathematician, speaker, author, and former math classroom teacher. He is collecting data via a voluntary survey on a Google Form regarding one's thoughts on democracy in the USA. This dude is awesome, and produces awesome, and if this helps give him a signal boost, then great!
Hi Friends-
One last request for your input on our Democracy survey. We are going to end the poll this weekend.

If you haven't checked it out yet, please share your thoughts ASAP!
docs.google.com/forms/d/e/1F...
September 4, 2025 at 3:42 PM
I have a student who has part of her upper arm wrapped in a kind of bandage. Maybe she just went to her dr and received a shot as part of a physical? Maybe something "else" happened? I don't know. It is immediately on my radar.

I also think about how teens make fashion out of everything. (1/2) >>>
September 4, 2025 at 1:57 PM
"Tides are one of the weirdest and most sci-fi elements of living on earth". A new thought I cannot unthink.

(From @xkcd.com)
September 1, 2025 at 4:38 PM
We don’t *spend* money on space exploration. We invest in it. Funding the nerds is a service that pays dividends-- often in unexpected ways.

The comment in this screenshot couldn’t align more closely with my views re: spending on “useless” experiments and studies. Yes, please! #Penny4NASA @esa.int
August 31, 2025 at 4:24 PM
The chance for aurora is particularly strong at lower latitudes from Monday evening through Tuesday dawn. Yes, I mean your time zone.

We, the planet, are under a "Geomagnetic Storm Watch" for a category G2/G3 event. A neato chart is available below from the nerds at @noaa.gov about this scale!
August 31, 2025 at 3:29 PM
I love how little chill the wit on the internet has. I may just post this on the bulletin board in the corner of my classroom and see what happens. “Oh students, you know who Taylor Swift is, too?” #YouBelongWithMeme
August 26, 2025 at 11:13 PM
Devil's advocate: What if vibe coding is just... coding? What if it's just the next-gen of high-level coding? We went from machine code to assembly (which made machine human-readable). Then came autocodes which came with compilers and even more abstraction. Then C and Python and transpilers... (1/n)
August 22, 2025 at 10:50 PM
Hey, if you want to show something quirky to your advanced students: you can use _an entire matrix_ as an exponent!

Weird!

Since e^x (and other things like sine, etc) has a pretty power series expansion, and as square matrices can be raised to exponents, then this calculation is permitted! #MTBoS
August 21, 2025 at 3:25 PM
I've only really had the wherewithal for one social media platform at a time; after all the nonsense on the other platforms, I think its time I try assimilation into Bluesky. I miss #MTBoS and Mathstodon didn't quite scratch the itch. Here's hoping @bsky.app doesn't get capitalism'd into the ground!
August 21, 2025 at 2:09 PM