Dan Anderson

Interesting frequency and amplitude differences between these two birds.

YouTube video by The Action Lab Is The Wobbly Table Theorem Ever Wrong?

Attention Math Teachers!
IVT and the Wobbly table theorem.

youtu.be/47YbLU7-J1M?...

Genuinely confused now. Multiple Spring Conferences? Is this the new name for “Regional”?

Desmos | Graphing Calculator

Reflections for parabolas and catenaries:
#iTeachMath #MTBoS
www.desmos.com/calculator/q...

Me three

YouTube video by NightHawkInLight DIY Solar Concentrators, Made Better.

Hey Geometry teachers! Check this out making parabolic solar collectors, and then more useful “compound solar collector”. Can you follow along with the geometric construction?

youtu.be/8zlAI32MSsQ?...

Newton Fractal in blue & orange hues.

A Song of Ice and Fire

f(z)=e^(zct)*sin(zt)

#fractal #newtonfractal #creativecoding

Are they using a different definition of “Spring”??? February?

Four complementary pairs of solutions to Apollonius's problem; the given circles are black.

I will also submit this as a great example of #mathart

Here we have 8 solutions to the Apollonius problem. Given any 3 circles, draw a fourth that is at a tangent to each.

#mathsky

Dunno hopefully soon! Also hope all is well on your side of the country, with your new job and all that!

💯. Especially love the message in the beginning suggesting going “off script” for the 14 practices. Here’s my favorite four of the fourteen:

How Bees, Beer Cans and Data Solve the Same Packing Problem (Gift Article) Trying to fit it all in? There’s a trick to it, even in 24 dimensions.

Dear #mathsky, if you repost this, it will let people see the article for free. Thanks!

www.nytimes.com/interactive/...

A reminder that LLMs are fundamentally the wrong class of model for many applications.

Often, a better choice is a simple database, an FAQ, or just good notes.

If you want interactive personalized learning, good luck to you... just don't use an LLM as a computation engine.

Last day with precalc. Yearbook signatures, puzzles, math games from Ben Orlin, and fractal tiles portraits of me.

Hey everyone, nbd, but I've been exclusively invited by NCTM. Bet you're jealous.

It’s like that parachute game in gym class, you know, where you bounce balls in the air (popcorn)? Except, the teacher is the only one holding the parachute, the math problems are the balls, and half the kids are on their third bathroom break of the day.

Vi Hart Mathemusician

I was devastated to not find any of Vi Hart's videos on youtube. I'm sure because of harassment, what a terrible place youtube can be.
BUT found their Vimeo channel: vimeo.com/vihart
Phew.
BTW, share these videos with your students, they haven't seen any of them and they are truly wonderful.

Here are some of the 8k renders:

Here's an interactive version. If you copy and paste this code into a processing environment, it'll render a 8000x8000 png when you click...
openprocessing.org/sketch/2668514
bsky.app/profile/dand...

Here's another one!

Cybernetics and Ghosts
As Italo Calvino wrote: "The more our houses are illuminated and prosperous, the more their walls drip with ghosts". Generative AI and its phantoms, both predicted by Calvino in 1967.
Made with #python #numpy #matplotlib #numba

Here's a 1000 frames of the constants from one of these morphing to the constants of another...

bsky.app/profile/dand...

Playing with some recursive chaos from @sconradi.bsky.social
Randomized the two constants and rendered. Only the images with large file sizes were interesting, so toss the rest! bsky.app/profile/scon...

I’d bet that Yoda was an HP graphing calculator user back in the day. 2 2 + => 4

I'm concerned that chatGPT is spitting out incorrect information. Who can I sue?

If they have limited time to work on homework, I wouldn't blame Ss for spending that time on classes that require the homework to be done for a grade. But that work would be done over mine. I've had this happen. Might be unavoidable, but I don't control those other Ts.

There's something to be said for practicing at home and explicitly valuing that practice.

I wonder if it's a chicken and the egg problem for these students.