Ocotillo on my walk today. #nature #walk #sky #Arizona

I’ve got some students working on the pidaychallenge.com this weekend. They are having fun. I don’t know who makes this, but kudos to them! #MathsToday. ♾️

I just volunteered my students to puzzle test for this. I loved thee big yellow game book he did. #MTBoS

Vector fields as art. In #MathsToday the students had to create a vector field and overlay it with a picture to create Vector Art. Just a fun little extension at the end of a unit. #iTeachMath

OMG I won! www.mscroggs.co.uk/blog/122

In #MathsToday we had success discovering the log properties. I had students use a log table to find all the ways to combine logs to equal log2, which led to them noticing the loga-logb=log(a/b) property. Then they looked for ways to make log12 (which led to discovering the product property.

In #MathsToday we used the Koch Snowflake to review writing exponential equations from data. Students then discussed what the end behavior would be for the equation of the perimeter. The kids enjoyed hearing how this was thought “abominable” by mathematicians when first discovered.

In #MathsToday we learned how to sketch vector fields. Then we had some fun with this neat app. Try the randomize button. #maths #MathArt anvaka.github.io/fieldplay/?c...

I’m going to #TCM in North Carolina in February! Super excited. All the abstracts look great. But I know for sure I want to attend the Knot Coloring and systems of equations talk. Anyone else attending? #MTBoS

In #MathsToday we started with a menu task. Students had to write as few quadratic equations (in vertex form) as possible while hitting 10 constraints. Enjoyed watching students explain their thinking to each other.

Teachers who participated in @jlanier.bsky.social Twenty-first century mathematics workshop last summer might be interested in the monthly seminars hosted by @chalkdustmag.bsky.social by authors of papers in the book. #iTeachMath #MTBoS chalkdustmagazine.com/blog/theorem...

In #MathsToday I had all the students at the whiteboards and asked them to solve ax^2+bx+c=0 by completing the square. They were so surprised to get the quadratic formula as their answer, and then they were proud they had derived this mystical formula without even realizing they were doing it.

Something that went well in #MathsToday was a personal victory for me. I’ve been trying to draw a particular student out, and today she volunteered to share her unique approach to solving a quadratic visual pattern. It’s always wonderful when the quiet voices speak up. 👍

Completing squares in #MathsToday and came to learn not a single student in class had ever used algebra tiles. Thank goodness for polypad! Quickly had students geometrically completing the square. You can even cut the algebra tiles in half and solve problems with fractions.

Jumping frogs puzzle in #MathsToday We used snap cubes for the frogs, but here is link for an online version. After playing, we modeled the number of moves versus number of frogs using a quadratic eqn. Did some quadratic visual patterns too. www.primefactorisation.com/frogpuzzle/

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...