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samjshah.bsky.social
@samjshah.bsky.social
430 followers 350 following 240 posts
high school math teacher! #mtbos
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robertfathauer.bsky.social
Charles O Perry sculpture in the lobby of the Hyatt Regency in San Francisco
February 19, 2026 at 2:28 PM
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ahestenes.bsky.social
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
Image is a subsection of Van Goghs Starry Night. It’s the large whorl in the sky. Over the image is a vector field which points along the whorl. The vector field is -sin(x-y) for the i component and cos(x+y) for the j component. The vector field is handwritten. The image is black and white. The vector field F=<x,2-x^2> is overlayed on the image of a fountain in a pond. The water sprays straight up and falls down into a circular region. The vectors point along the motion of the water.
February 19, 2026 at 12:02 AM
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nsato7.bsky.social
I was gifted a gorgeous origami sculpture of five intersecting tetrahedra. This inspired me to recreate it using Desmos.

www.desmos.com/3d/m7hqyu2gpr

en.wikipedia.org/wiki/Compoun...

@desmos.com #iTeachMath
February 16, 2026 at 5:01 PM
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baabbbaash.bsky.social
A tour of tours, an open knight's tour of an 99x99 chessboard. The tour starts in the bottom left corner and ends near the top right corner.
January 28, 2026 at 4:42 PM
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darthcalculus.bsky.social
I had a productive day in #Desmos today. I also made a simulation of the refraction and internal reflection that causes rainbows. Enjoy, #EduSky and #MathSky ! #IteachPhysics

Full spectrum: www.desmos.com/geometry/hga...
(reverse contrast!)

Single ray with angles: www.desmos.com/geometry/l32...
A screenshot of a Desmos graph that shows how a ray of light refracts and reflects within a water droplet to produce a rainbow A screenshot of a desmos simulation that shows the path of a ray of light refracting through and reflecting off the back of a water droplet. Normal lines and angles are shown.
February 16, 2026 at 4:47 AM
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catrionaagg.bsky.social
Six squares and a quarter circle. The blue square has area 2. What’s the yellow area?

#geometrypuzzle
Six different coloured squares. Five are inside the quarter circle, and the sixth has two vertices on its circumference. The yellow square is the one on the bottom right.
February 16, 2026 at 10:32 AM
samjshah.bsky.social
Last two drawing-on-the-cricut experiments -- Hitomezashi patterns! Now I’m done for the day!

#mathart #mtbos
February 16, 2026 at 11:52 PM
samjshah.bsky.social
And another cool one, using the code provided here! penplotter.art/p/algorithmi...

#mathart #mtbos
February 16, 2026 at 9:22 PM
samjshah.bsky.social
Finally got an hour to play with Desmos and my cricut. To my eyes, what I was able to make is stunning! 😍 🤩 #mathart #mtbos
February 16, 2026 at 8:55 PM
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pennigulrich.bsky.social
Happy (topological) Valentines Day!
Two strips of paper glued together to form two Möbius strips. The two Möbius strips glued together back to back. Cut both strips open along the middle circle. The picture shows what this looks like when you cut the first strip open. If you have chosen the orientations of the Möbius strip correctly, then the result will look like two interlinked paper hearts, which are shown in the picture.
February 14, 2026 at 4:14 PM
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divbyzero.bsky.social
Gathering 4 Gardner is this week. I'll be running an activity where we'll make one of these giant cardioids (and a giant nephroid). Today, I'm taking advantage of the sunny, above-freezing day to laser-cut the pieces outside.
A giant cardioid A close-up of the giant cardioid. Pieces being laser cut
February 14, 2026 at 7:42 PM
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divbyzero.bsky.social
One more, which I call "I ❤️ the Cardioid." (A cardioid from one direction and a heart in the other.)
A heart with a cardioid reflected in the mirror. A cardioid with a heart reflected in the mirror.
February 12, 2026 at 3:37 PM
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intarynx.bsky.social
A #genuary sketch that escaped January - Bauhaus Fibonacci

www.upstride.ch?id=bauhausfi...

#CreativeCoding #CodeArt #genuary2026
February 12, 2026 at 6:00 PM
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msmathcomp.bsky.social
Things have been rather busy at the #illustratingMath trimester at the Institut Henri Poincaré for the last two weeks. A number of illustration projects have been started. I'll share some highlights in this thread. (1/6)
February 11, 2026 at 3:44 PM
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johngolden.bsky.social
#mathstoday started with one of my favorite early probability activities. Students write events on stickies for almost never to almost always and another group tries to sort them. Lots of discussion about wording and googling for more info.
February 12, 2026 at 9:03 PM
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divbyzero.bsky.social
Still playing with these impossible cylinders. Here I have an ellipse with the "Batman curve" in the reflection.
An ellipse reflected in the mirror as the Batman logo.
February 11, 2026 at 3:09 PM
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runwithskizzers.bsky.social
omg everybody go draw a horse this is what the internet was made for

gradient.horse
gradient.horse
Draw a horse, watch it run!
gradient.horse
February 9, 2026 at 11:11 PM
samjshah.bsky.social
A cool article reddit led me to on how to make some cool math art!

penplotter.art/p/algorithmi...

#mathart #mtbos
#005: Algorithmic Art Tutorial: How to Create Emergent Complexity
Learn how to create mesmerizing algorithmic art by combining concentric circles and Perlin noise, bridging digital creativity with physical plotting techniques.
penplotter.art
February 7, 2026 at 11:56 PM
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dsrussosusan.bsky.social
#iteachmath #mtbos

What do you call it when you solve a log equation by performing the operation of making, say, 10 the base of each side?

log(x+2) = 5

10^log(x+2) = 10^5

What’s the name of this operation?
February 7, 2026 at 8:33 PM
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mpershan.bsky.social
This question is playing with fire.
February 6, 2026 at 4:46 PM
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saravanderwerf.bsky.social
This isn't easy to share, but I'm grateful for any support, prayers, or encouragement during this season. Love to all. www.gofundme.com/f/support-fo...
Donate to Support for Sara After Condo Flood, organized by Amy Carroll
Sara, my sister, is going through an incredibly tough time. Two weeks ago, during a sub… Amy Carroll needs your support for Support for Sara After Condo Flood
www.gofundme.com
February 7, 2026 at 12:41 AM
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desmos.com
The 2025 Desmos Art Contest gallery is now live 📣! Filter by feature and find your new favorite graph at desmos.com/art 🎨
#mathsky #iteachmath #mathart
February 6, 2026 at 4:01 PM
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maria-naturalmath.bsky.social
Help us bring to life AL, LOGICAL by Xavier Golden and @johngolden.bsky.social, the first graphic novel to be published by Natural Math. I love comics, and Xavier's beautiful panels are adventurous and cool. John's decades of math ed design shine here. Let's go! www.kickstarter.com/projects/nat...
AL, Logical! A Young Adult Graphic Novel
It's like a math circle, but in a haunted multi-dimensional mansion where a brave artist finds a restless ghost of a mathematician.
www.kickstarter.com
February 6, 2026 at 11:34 PM
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johngolden.bsky.social
Yay! The kickstarter for our mathy graphic novel AL, Logical is live! www.kickstarter.com/projects/nat... We appreciate any views, retweets, and support for this YA story of curiosity, perseverance, and problem solving.
AL, Logical! A Young Adult Graphic Novel
It's like a math circle, but in a haunted multi-dimensional mansion where a brave artist finds a restless ghost of a mathematician.
www.kickstarter.com
February 4, 2026 at 5:49 PM
samjshah.bsky.social
I have lots of (former) math teacher friends who have been writing curricula. If you're interested in an awesome gig in this space, check out BEAM's current offerings (link: www.beammath.org/work-at-beam)
It's a GREAT organization (check it out if BEAM is new to you!)

#MTBoS #iteachmath

Pleast RT
February 4, 2026 at 12:11 AM