NEW: How many books did you read this year? If it was more than 2, congrats: you read more than the median American. Read on for way more @today.yougov.com polling from me on America's book-reading habits in 2025. 1/

This is great fun, even though I am stuck on door 21. #MTBoS #maths

Reviewing functions, complex numbers and iteration before winter break was a perfect excuse to explore the Mandelbrot Set. I challenged students to find an image that would amaze their classmates, as well as record the location and zoom factor. #ITeachMath #MTBoS mandelbrot.page?pixelratio=3

I just completed my first flummoxagon. So satisfying!

In #MathsToday we did an old fashioned card sort. Arranged the polynomials by end behavior, then matched up the equations to the graphs. After, I gave them some equations and they had to sketch the graph on the whiteboards, paying attention to end behavior and x-intercepts. #Algebra2 #iTeachMath

In #MathsToday we did one of my favorite’s, the painted cube problem. A nice thinking problem to introduce polynomials.

I found this problem somewhere (here or mathstodon?). But I saved the image they posted of the problem. It completely took over my brain. I brought it up over lunch with a few other math teachers, and we argued about it. And I think we came to great solution. Thanks OP! #Teach180 #iTeachMath

Success! 🎻🧱 #FiddleBrix Sunday, September 14, 2025 2:43 (no hints!) 🟪🟪🟨🟦🟦 🟪🟨🟨🟦🟩 🟪🟨🟨🟦🟩 🟪🟨🟩🟩🟩 🟪🟨🟩🟩🟩 fiddlebrix.com

Ta daaa! I give you the Lorentz Attractor thanks to the free pattern from #ThreadedTheorems and also @samjshah.bsky.social whose posted work I admired. #StemBroidery #MathArt #MathSky

Here is a problem I thought I’d never have. Our math club is too big! Just over 200. How do we make meetings meaningful and not just chaos? Wow. Gotta think. #iTeachMath #MTBoS #MuAlphaTheta

Pullback cars must mean it’s time for Vroom Vroom ala @fawnnguyen.substack.com . Reviewing linear regressions was never so fun. #iTeachMath #Algebra2

Building hypercubes to round out level surfaces today. Students had fun building 2 different perspectives and trying to match it up with Schlegel diagrams in order to identify the 8 cubes within. A fun pre-Labor Day weekend activity. #iTeachMath #MathSky

Beautiful view on the way to work. Had to pull over and photograph. #sunrise #clouds #sky

Problem solving, what not to do! I love this video clip so much and shared with students today before giving them something challenging to solve. #iTeachMath #MTBoS www.youtube.com/watch?v=FSIk...

Had an extra day with one class compared to others today, so we tried out a @mathforlove.bsky.social activity “Squarable Numbers”. Had 100% participation and lots of good discussion. #iTeachMath #MTBoS mathforlove.com/lesson/squar...

Creating 3D visualization of z=f(x,y) from a table of numbers. #iTeachMath #MTBoS

All ready to explore the 3rd dimension. Tri-tac-toe and Qubic. How many ways can you win? #ITeachMath

Two things I always need more of. #iTeachMath #MTBoS #Maths

I got one! 🎻🧱 #FiddleBrix Tuesday, July 29, 2025 8:54 (no hints!) 🟪🟪🟪🟨 🟪🟨🟨🟨 🟦🟨🟨🟦 🟦🟦🟦🟦 fiddlebrix.com

Just a reminder kids. Thinking can be messy. But it is so much fun! #iTeachMath #maths #MTBoS

Had some fun folding up the Weaire-Phelan structure made using these instructions: www.cutoutfoldup.com/214-weaire-p... This is a model of idealized bubbles fitting together and was the inspiration for the Beijing National Aquatics Center in the 2008 Olympics. #MTBoS #ITeachMath

Recently, my book THEY CALLED US ENEMY was banned – again – in Tennessee. Book bans are out of control. Huge parts of American history are being restricted. To join me in standing up for the freedom to read, go to pen.org/action. @penamerica.bsky.social @topshelfcomix.bsky.social @idwpublishing.com

Thinking about pentaminoes today. And it reminded me of a puzzle I hadn’t done in awhile. Looking at it anew, I see one piece is actually a hexamino. I wonder if this puzzle could be redesigned to only use pentaminoes? #iTeachMath #MTBoS

New post: Permission to Go Off Script Building Thinking Classrooms practices are powerful—but they’re not all-or-nothing fawnnguyen.substack.com/p/permission...

I think this game was made especially for me. #maths 💣 I scored 100% in 199 seconds! vole.wtf/primesweeper/

Navajo wedding vase symbolizing two becoming one will be my submission for #even #MathPhoto25 Next I will work on some even/odd Sodoku variant puzzles while I eat a #pair of cookies for good measure.

I’m a bit late with #symmetry for #MathPhoto25 but I was cleaning out and found a bunch of pencils and was inspired to make this ala George Hart. How many pencils did I use? What sort of symmetry does it have? This will look great until the kids need to borrow a pencil. #iTeachMath

This looks interesting… #iTeachMath #MTBoS

If you were asked to recommend one book, video, conference, etc to a new math teacher, what would it be? #ITeachMath #MTBoS

#MathPhoto25 is about #angles this week. I took this photo at the California Science Center. How many unique angles do you see? Are there more acute or obtuse angles? #ITeachMath #MTBoS

I was watching James Tanton show how to get a formula using the leading diagonals of difference tables at this webpage: gdaymath.com/lessons/gmp/... But I’m stuck on #9. I believe the constant might be off but I not sure why or how. Any ideas? #ITeachMath #MTBoS

I just registered. Super excited!! #ITeachMath #MTBoS #MathEd

Help the internet solve every 5x5 nonagram puzzle. pixelogic.app/every-5x5-no...