iiinova — where your digital self keeps evolving

Reposted by Geometiles

DonorsChoose @donorschoose.bsky.social · 09/04/2026

Starting April 13, the DonorsChoose community is celebrating STEAM Futures Week! That means each day next week, our partners will double donations to select STEAM requests while funds last. Get ready to share your STEAM projects!

011

Geometiles @geometiles.bsky.social · 15/03/2026

Happy Pi Day to all, from San Diego!

021

Geometiles @geometiles.bsky.social · 08/11/2025

Teachers: you can get Geometiles funded by DonorsChoose! #edusky

000

Geometiles @geometiles.bsky.social · 27/10/2025

We’re soft launching a new set for grownups: just 48 half-equilateral triangles, but many building possibilities. Thoughts? #mathsky

youtu.be

5 of the many shapes you can make with 48 Geometiles 30-60-90 triangles

YouTube video by Geometiles

060

Geometiles @geometiles.bsky.social · 04/10/2025

This is an entry for the 3rd day of #mathober2025 (polyhedron) and also the 1st day (link). It is a variation on a rhombicuboctahedron with a projection of the Borromean Rings. #mathober #mathsky

182

Reposted by Geometiles

Fractal Kitty @fractalkitty.com · 01/10/2025

Is everyone ready for #mathober? #mathober2025 I am looking forward to everyones takes, art, musing, jokes, etc. Mathober has no rules - do 1 day or 35-or just follow along. Blog: www.fractalkitty.com/mathober-2025/ Just the prompts: mathober.com #indieweb www.fractalkitty.com/content/imag...

Day 1: Link
Day 2: Deviation
Day 3: Polyhedron
Day 4: Strongly
Day 5: Digraph Sink
Day 6: Partial Sum
Day 7: Notation
Day 8: Octagonal Heptagonal
Day 9: Chi
Day 10: Stellations
Day 11: Orthogonal Polynomial
Day 12: Monotonic
Day 13: Sporadic Group
Day 14: Augmented Matrix
Day 15: Chord
Day 16: Faithful
Day 17: Wheel
Day 18: Primitive
Day 19: Domain
Day 20: Reye Configuration
Day 21: Sawtooth
Day 22: Odious
Day 23: Jacobian
Day 24: Number Field
Day 25: Wedge
Day 26: Amalgamation
Day 27: Bidiminished
Day 28: Recursion
Day 29: Hexyl
Day 30: Minor
Day 31: Central

0127

Geometiles @geometiles.bsky.social · 03/07/2025

This jumbo size dandelion is called a salsify, to the best of my knowledge. The tiny broom is a single seed. The “heart” has Fibonacci spirals. Could the spherical looking flower be a spherical Fibonacci mapping? Seen in North Rim, Grand Canyon NP. #mathsky #Fibonacci

030

Geometiles @geometiles.bsky.social · 18/04/2025

My most recent homage to #eggs— the bottom is half of an icosidodecahedron, and the top is part of a rhombicosidodecahedron. #mathsky #edusky #mathart

092

Geometiles @geometiles.bsky.social · 28/03/2025

It's #NationalQuiltingMonth ! What better time to incorporate math teaching and quilting. Read our new blog:https://geometiles.com/quilting-blocks-and-geometiles-old-meets-new #mathsky #edusky #mathart

080

Geometiles @geometiles.bsky.social · 23/03/2025

Day 22 of #mathartmarch inspired me to make this section of a torus with a #hexagon shaped cross section. #mathsky #mathart

0150

Geometiles @geometiles.bsky.social · 17/03/2025

Day 17 of #mathartmarch entry: symmetry. This pattern is called “Night Sky” and was designed by Julie Herman of Jaybird Quilts. #mathsky #mathart

0180

Geometiles @geometiles.bsky.social · 17/03/2025

Celebrating #nationalquiltingmonth with two classic quilting blocks: the Sawtooth Star and Dutchman’s Puzzle. Geometiles allow you to create these patterns quickly so that you can focus on their geometry even if you don’t know how to sew. See Geometiles.com/quilts for examples. #mathsky #edusky

0100

Geometiles @geometiles.bsky.social · 13/03/2025

Celebrating this year’s Pi(e) Day with this fluted number! It comes with its own pie stand, made for the occasion. Watch video to see how two flat surfaces come together to make the pie— or should I say PIElyhedron?? Mobies make the thin pedestal of the pie stand possible. #mathsky #piday2025

061

Geometiles @geometiles.bsky.social · 03/03/2025

Wait for it… this 7 yr old is discovering a new way to play with Geometiles. He’s treating the chain of rectangles as a multi-hinge system, and he finds it “satisfying” to experience the system unfold from a triangle to various other shapes under the effect of gravity. #edusky #mathsky #iteachmath

010

Geometiles @geometiles.bsky.social · 03/03/2025

Yesterday at the @mathhappens.bsky.social booth at the San Diego Festival of Science & Engineering with @nhoskee.bsky.social and blocks by @triangleman.bsky.social and @mathforlove.bsky.social #iteachmath #edusky #mathsky app2.ricoh360.com/viewer/30903...

app2.ricoh360.com

R0010622(1)

061

Geometiles @geometiles.bsky.social · 18/02/2025

This #BlackHistoryMonth I’ve been looking at the origins of African American crafts. The pattern in the first picture is inspired by Kente cloth. The cube design is based on the zigzag pattern often seen in African art. #mathsky #mathart #mathematicalart

090

Geometiles @geometiles.bsky.social · 10/02/2025

Mirrored triacontahedron (30-faces) at the @byltbasics.bsky.social store at the local mall. This solid was discovered by Johannes Kepler. It is dual to the icosidodecahedron. #mathsky #mathart

2112

Geometiles @geometiles.bsky.social · 03/02/2025

Want a perfect Valentine’s Day gift for the person in your life who likes math and/or building things and/or hearts? Check these out. Geometiles.com/product-cate... .$27 including shipping in US.♥️🤍💙 #mathsky #edusky #iteachmath #valentinesday2025 #valentinesgift

120

Geometiles @geometiles.bsky.social · 25/01/2025

At the recent Joint Math Meeting, I ran a contest. “The yellow and green tetrahedra are both completely filled with coffee beans. The yellow one contains 93 beans. How many coffee beans are in the green tetrahedron?” The result may surprise you. #mathsky #edusky #mathed #iteachmath #jmm2025

geometiles.com

Seattle Themed Volume Problem - Geometiles®

060

Geometiles @geometiles.bsky.social · 17/01/2025

The last day of the Joint Math Meetings is always bittersweet because that’s when I get to interact with really young mathematicians, but not nearly for as long as I’d like. 9 yr old boy with an elegant structure he designed on his own; girl discovering the #hattile. #jmm2025 #mathsky #edusky

050

Geometiles @geometiles.bsky.social · 13/01/2025

Here's a video set to music of the spherical picture of the octacube structure built by Glen Whitney and Seattle Universal Math Museum at the Joint Math Meetings. #jmm2025 #mathsky #mathart youtube.com/shorts/8KYe7...

youtube.com

Inside the Octacubes Structure

YouTube video by Geometiles

040

Geometiles @geometiles.bsky.social · 11/01/2025

Even if you didn’t get a chance to attend #jmm2025, you can experience what it’s like to be inside Glen Whitney’s giant structure thanks to #ricohtheta. app2.ricoh360.com/viewer/aeea7... #mathsky

app2.ricoh360.com

R0010610

020

Geometiles @geometiles.bsky.social · 10/01/2025

Kudos to David Weed, of UC Riverside, for winning the coffee bean contest at #JMM2025 ! One of the yellow tetrahedra had 93 coffee beans, and his guess for the number of beans in the green one was 205, just 1 over the correct number. V(green)=2 V(yellow) by Cavalieri’s principle.

000

Geometiles @geometiles.bsky.social · 09/01/2025

Still catching my breath after the opening reception at the #JMM2025. This star summarizes my experience: raucous geeky fun. Thank you to the person who made this— you’re the first person to build this shape.

020

Geometiles @geometiles.bsky.social · 09/01/2025

At the #jmm2025 ? Try our coffee bean estimating contest before you leave the opening reception.

000

Geometiles @geometiles.bsky.social · 03/01/2025

If you're planning to attend #JMM2025 next week, stop by Booth 331 for a view of the Space Needle and to participate in our Seattle themed estimation challenge. We'll be next to the Math Art Exhibit, where you can see my piece "Full Circles". #mathart #mathematicalart #mathsky

0122

Geometiles @geometiles.bsky.social · 23/12/2024

Just in time for #chanukah2024 , here is an easy to make Geometiles Dreidel. It’s made of eight 30-60-90 triangles and four right isosceles triangles. You need to improvise your own handle for spinning it — I just glued together 4 coffee stirrers. #mathsky #iteachmath #iteachphysics

040

Geometiles @geometiles.bsky.social · 19/12/2024

I recently had the privilege of viewing some original editions of Kepler's work. Along with several @aimathematics.bsky.social mathematicians, we went down into the archives at Caltech and had a personal showing. Read about it here.

geometiles.com

Kepler at Caltech - Geometiles®

063

Geometiles @geometiles.bsky.social · 18/12/2024

A very mathematical play structure in the heart of San Diego. The outside frame is an #icosahedron. Inside, and this is very difficult to see in the picture, are two nested soccer balls.

020

Geometiles @geometiles.bsky.social · 15/12/2024

Looking for a gift under $30? Order on our website this weekend to get your gifts delivered in time for Christmas! Free gift wrap and free shipping the US! www.geometiles.com/shop. #iteachmath #giftsunder30

041

Geometiles @geometiles.bsky.social · 30/11/2024

Catalan solids by HYBYCOZO at Sensorio. These are duals of the Archimedean solids icosidodecahedron and rhombicuboctahedron. #mathart #mathematicalart

0144