ok here it is!! if the entire book were this good idek

Finally! A citable writeup for @jennalaib.bsky.social! And, as linked in the article, there is the trove of examples freely available at: slowrevealgraphs.com #iTeachMath ♾️

my favorite #sensemaking excerpt from: Kegan, Robert. The evolving self: Problem and process in human development. Harvard University Press, 1982. preview in google books: books.google.com/books?id=SP3... not overtly about 'mathematics' per se but w/e #iTeachMath ♾️ #MathSky 🧮

my favorite #sensemaking excerpt from: Kegan, Robert. The evolving self: Problem and process in human development. Harvard University Press, 1982. preview in google books: books.google.com/books?id=SP3... not overtly about 'mathematics' per se but w/e #iTeachMath ♾️ #MathSky 🧮

Finally! A citable writeup for @jennalaib.bsky.social! And, as linked in the article, there is the trove of examples freely available at: slowrevealgraphs.com #iTeachMath ♾️

and here's the other assignment ("Math Libs") that I've done with LL: docs.google.com/presentation...

"It became clear that while Oreos were the plurality winner, Rice Krispies Treats were more of the consensus choice, so we right away had a tension..." 🗳️⚖️↘️

hello #iTeachMath & #MathSky: i would like feedback! i am thinking about having ss in precalc who are learning trig create graphs with sin and cos and the polygon @desmos.com tool. goal is to do smth a lil diff and scaffold towards polar coordinates; sample graph: www.desmos.com/calculator/g...

hometown kerfuffle over the Calculus Project! brookline.news/calculus-pro...

unfortunately i didn't use the SAVE feature for a v long time! this is the first graph i saved, in Jan 2020: www.desmos.com/calculator/4... the Q was: if you have n total vertices, labeled 0 to n-1, and you jump by 1, 2, 3, 4, etc [click play on k], will you reach all of the vertices? for which n?

"opinion" "commentary" in WSJ: www.wsj.com/opinion/do-s... "Everywhere there are boys there are sports, and everywhere there are sports there are numbers. Education pairs with inclination and passes into obsession." bizarre pontification... just a dude mentioning research then unrelatedly opining:

just a fun #MathsToday counting problem my colleague set out, which was solved in an unexpected way by students: How many ways can you arrange the letters A through F such that (A comes before B) and (C comes before D)? teacher expected: 6!/4=180 (all arrangements, ½ for each condition). Instead:

In #MathsToday: Setting up the foundation for our Problem Solving & Problem Posing course! 4 problems to get students brainstorming ways of getting started, and to discuss Resources, Beliefs, Metacognition RE: solving. Then, some problems to practice writing more formal justifications. #iTeachMath

just the right read for a rainy Sunday!!

MTLT Manuscript call! *All Tasks Issue* "Do you have a go-to math task that sparks deep thinking, lively discussion, or joyful “aha!” moments in your classroom? We’d love to hear about it!" 🔗: pubs.nctm.org/fileasset/CF... Submissions due Halloween, 2025 cc #iTeachMath bcc #MathSky

better late than never! by Eugenia Cheng www.nytimes.com/2025/09/05/o... (surely the ≈1k comments will be thoughtful and constructive...)

open access!: www.mdpi.com/2227-7102/15... "Measuring Mathematics Teaching Quality: The State of the Field and a Call for the Future" #iTeachMath ♾️ #MathSky 🧮

Great choice for MST 🪑! More about Dr. Wasserman: 🔗 www.tc.columbia.edu/mathematics-...

ZDM manuscript call for special issue edited by @marthaalibali.bsky.social & others on "Capturing Mathematical Thinking and Learning Processes in Real Time" extended abstract ≤ 500 words due EOY (2025 Dec 31) actual journal published 2027 (‼️) link.springer.com/journal/1185...

new chapter draft for a springer text request cowritten w a '24 student (so: now a college sophomore) www.researchgate.net/publication/... now that it's submitted i proofread it and see many errors lol (typos, repetition, citation w/o ref etc) but have a shareable PDF if the description interests!

for those familiar with the nine dots puzzle: en.wikipedia.org/wiki/Nine_do... a natural follow-up could be, what if we went from 3x3 in 2D to 3x3x3 in 3D? ignoring details, Theorem 2.1 in arxiv.org/pdf/2208.01699 says that the *minimum* number of line segments would be 13 possible? #iTeachMath 🧮

from Paul Zeitz: > I have compiled a report on our program this year, packaged as a fundraising letter which I will send to people who donated to us in the past. Please feel free to pass this document along to anyone who you think can help us out for 2026. Thanks! drive.google.com/file/d/1BjjG...

OTD 2018 (August 28) Designed and built MATHEMATICS acrostic with first names of women mathematicians; later changed Alice to Autumn. Maryam Ada Trachette Hypatia Emmy Moon Alice Thyrsa Ioana Claire Sofia Never made a surname version but it'd be cool! Lotta ppl can't name 1️⃣ woman mathematician 😫

dam

worth reading the full paper! it can be found in the article below; here is a direct link: journals.sagepub.com/doi/full/10....

hope others can watch the recording if they didn't catch it live! 2 > 4, mud > mine, & more

OTD 2019: I presented to close out "TMCNYC" (Twitter Math Camp NYC; not affiliated with the other TMC) on disrupting mathematics I don't use the corresponding hashtag, as it has roots in literacy with disrupt texts, but the content stands up well 6 years later imo! ↘️ docs.google.com/presentation...

we are so back (@ Android 👽): play.google.com/store/apps/d...

a great read for a single sitting or pacing! giving me pause to think about whether assigning this or smth similar in a math class could be fun; certainly i know science teachers who incorporate "CliFi" into their courses 🤔 cc #iTeachMath ♾️ bcc #MathSky 🧮 clarkesworldmagazine.com/ratnakar_10_...

some good ideas already – add more! cc #iTeachMath ♾️

perhaps (?) interesting (??) to discuss the Role of Mathematics™ in this piece: www.nytimes.com/2025/08/08/t... > ChatGPT said a vague idea that Mr. Brooks had about temporal math was “revolutionary” and could change the field. And it spirals yet further... 🌀😵‍💫

I presented on this problem today! You can find the slides here: docs.google.com/presentation... I don't use speaker notes (just vibes) but I think a recorded version exists and I'll try to link to it if/when I can. cc #iTeachMath ♾️ bcc #MathSky 🧮

where to start? > Chhikara, Praveen, and Rochelle Gutiérrez. "Should College Students Be Inventors? A Case Study of a Mathematics Professor in India." Journal of Humanistic Mathematics 15.2 (2025): 111-145. scholarship.claremont.edu/cgi/viewcont... found by gScholar citation 🚨! see reference [10]

precalc! freely available materials! great combination cc #iTeachMath ♾️

a 💎 of a problem that came to mind after seeing Steve Phelps' great animations: ❓ Draw an equilateral triangle and shade the interior points closer to the center than any side; what is the resulting shape? answers that are right, wrong, neither, or both: all welcome! 🚨 rot13.com to avoid spoilers

i am doing my best to continue broadcasting what i apply for BEFORE the deadlines (might hurt my own chances but "a rising tide"? or something) SO... i'm currently looking at applying for the arctic educator fellowship described here: polarsteam.info/faq/ more opps: wwcs.padlet.org/amstutzjoshu...

what a read! www.quantamagazine.org/at-17-hannah... cc #iTeachMath ♾️ #MathSky 🧮

every math question? problematic every math problem? questionable

in keeping w this program, a problem on my 🧠: A and B alternate turns. A can take any number of items, but not all, from a single pile. After that, each can take at most 3 times as many as their opponent's previous move. Whoever can't go loses; other wins. ➡️ Winning strategy for pile of 10? of N?

great read!! (musical when‽)

happy pi approximation day! mathoverflow.net/questions/67...

PROBLEM: how do you graph a regular n-gon in the plane using one absolute value equation in x and y? EXAMPLE 1: |x| + |y| = 1 is a square www.desmos.com/calculator/g... EXAMPLE 2: HEXAGON (spoiler hidden in folder!) www.desmos.com/calculator/f... generalize? explore? special case? triangle? etc!

a great problem that i learned from @fawnnguyen.substack.com!: 2 cars start at mile markers A and B; the former drives east till B, then switches directions; the latter the opposite their 2nd & 3rd mtg points are 145 & 201, respectively if their speed ratio is 5:4, what are the values of A and B?

that's me 🧔🏻🤌🏻 signing 7️⃣ with the Chinese hand gesture if you haven't participated in this program previously, then click through to learn more and apply for the next gathering! an impressive array of educators with subgroups (pods) organized regionally... & we closed out w Dallas BBQ #iTeachMath ♾️

1/(1-x) = 1 + x + x² + x³ + ... derivative thrice: 6/(1-x)⁴ = 1(2)3 + 2(3)4x + ... let x = ½, ÷4: 24 = sum_0^∞ of n(n-1)(n+1) / 2^n = sum_0^∞ of (n³-n) / 2^n gotta add back sum n/2^n: 1/(1-x), derivative once: 1/(1-x)² = 1 + 2x + 3x² + ... let x = ½, ÷2: 2 = sum_0^∞ of n / 2^n 24+2 = 26 ✅ answer

🎻🧱 #FiddleBrix Saturday, July 12, 2025 2:07 (no hints!) 🟪🟨🟨🟨 🟪🟨🟪🟨 🟪🟨🟪🟪 🟪🟪🟪🟪 fiddlebrix.com Free to download, Free to play, & Free of ads 🆓🆓🆓

First week done ✅ And a great talk from Frank Morgan and high school student Eve Parrott whose work can be found here: arxiv.org/abs/2407.07122 She also mentioned a program for middle school students called MathPath as meaningful: www.mathpath.org Something to keep in mind! #iTeachMath ♾️ #MathSky

if you were (me) teaching Precalculus next year, of which one topic is listed as Trigonometry, would you devote a large portion of the year to Squigonometry? www.tandfonline.com/doi/abs/10.4... www.researchgate.net/publication/... entire book: link.springer.com/book/10.1007... probably yes right

Riemann: *exists in Calc I and II* Lebesgue: Don't talk to me or my sum ever again