CALLING ALL CROCHET GEEKS AND GRANNIES -- Crochet a mathematical granny square for an art exhibit
We invite you to create unique granny squares that will be combined in a community artwork called Vie de grand-mère, which will appear in the exhibit Création, entre arts et mathematiques at Maison Poincaré in Paris, France.Â
To be part of the project, choose your own granny square motif using our interactive app at www.mathgrrl.com/granny-life, then follow the crochet pattern and project instructions below.
We welcome all crafters, artists, and mathematicians, from beginners to experts! :)
Use the Granny Life app to choose a "Paris" motif, and submit your choice in the Contact Form.
Choose your own color of Malabrigo Rios yarn and crochet a granny square in your motif using our free Pixie Square pattern.
Your square could be in an art exhibit in Paris! Submit completed work in the Contact Form.
Learn how to stitch the first two rounds of the Pixie Stitch granny square. For full instructions and details, see the Pixie Square pattern page.
Learn to stitch edges and corners and  how to manage color changes and tension. For details and close-up photos, see the Pixie Square pattern page.
Aug-Dec 2025, James Madison University
Oct 20-24, Queens College
Nov 1, SUMS Conference at JMU
Nov 14-15, MAA Section Meeting at UMW
Jan 4-7, Joint Math Meetings in DC
This project combines traditional artistic crafting with modern scientific and mathematical methods, and invites community members from the crafting and mathematical communities to participate together. The artwork explores rule-based pattern generators in the fiber arts, with a modified classical crochet technique that accommodates detailed, pixellated motifs generated from two-dimensional cellular automata. The finished work will be comprised of more than one hundred crocheted 6-inch granny squares created by crafters, artists, and mathematicians.Â
The purpose of this artwork is not to illustrate cellular automata; rather, it is to leverage mathematics as a design tool, in a partnership between human creativity and algorithmic structures that creates a beautiful and cohesive artistic work.Â
The motivation for using totalistic cellular automata to create granny square motifs is to create a set of motifs that naturally work together. Naively, we could make completely random choices to make a grid of granny squares, each with traditional crochet symmetries. But by using motifs that are generated from cellular automata rules, it is possible to obtain a much more interesting and structured set of designs. Even better, if we restrict our attention to just one totalistic rule (in this project we will use "Rule 6"), then we can obtain a set of designs that share various pattern similarities and form a more cohesive final artwork. The final artwork will consist of multicolored squares contributed from community members, and attached together in a pleasing arrangement to make a wall hanging for exhibition.
This project has been ACCEPTED(!) to the Création, entre arts et mathématiques exhibition at Maison Poincaré which will be on display in Paris, France from April-July 2026.Â
The motifs used in this project are all generated from a modified 2D totalistic cellular automaton that we call "Rule 6". To read more about the mathematics behind these patterns and how they are generated, see our page on The Math Behind the Motifs. Â (COMING SOON :)
Do I have to use a specific type of yarn?
Yes, to have a square included in the artwork you do have to use a specific brand and color of yarn (Malabrigo Rios, with Ivory as the light color); see the Pixie Square Crochet Pattern for more specific details. Of course, you can also use the free motif generator and free crochet pattern for your own projects with yarn of your choosing.
Can I crochet more than one square for the project?
Yes! You can claim up to five motifs at a time, and submit as many completed squares as you like. If you purchase the yarn for the project then you should be able to make five or six squares.Â
Is it okay if I crochet left-handed?
Yes! We welcome left-handed crocheters to this project. The stitches and the pattern are very symmetric, so it should not make a difference if you "crochet the other way".Â
Should I "block" my crocheted square when it is done?
No. Please do not block your square before submitting. "Blocking" is the name for wetting/steaming your square and then pinning it into shape; please don't do that. We will block the squares in a consistent way when they are recieved.Â
What if my finished square doesn't look perfect?
It takes some practice to get the stitches, tension, carried yarn, and square shape to all come out right. If your square isn't perfect then it can be a "learning square"; please hold on to it, because part of the exhibition has to do with the process of creating art. Your practice/learning squares could also be part of the exhibit!Â
What is the deadline for submitting a crocheted square?
I would like to have most completed squares by December 2025, and will then accept them on a rolling basis until the end of January 2026.
Have a question not covered here? Ask us in the Contact Form.
The squares below are finished and will be included* in the community art project submitted to an exibit at Maison Poincaré in Paris, France! You can notify us that you have completed a square, and obtain instructions for mailing it to us for inclusion in the artwork, by filling out the Contact Form.
* Some of the completed squares may be the wrong size or have other issues that could preclude them from being in the main artwork. Those squares will be included in the creation/process part of the exhibit.
generation 9
mathgrrl
generation 12
Elkie
generation 18
maths_kath
generation 34
Yarnlord
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wildstrom
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AbbeyPerini
generation 65
Reka
generation 66
AbbeyPerini
generation 74
LisaSnailBear
generation 75
Routl
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asabest
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Lise
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Malou
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Emza
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Emza
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Malou
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virtualcourtney
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Reka
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gottaotter
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Malou
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Flave
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Routl
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Flave
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asabest
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mathgrrl
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FreyÂ
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AbbeyPeriniÂ
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mathgrrlÂ
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asabest
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mathgrrl
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mathgrrl
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Reka
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mathgrrl
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kwb
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Bee
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mathgrrl
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AbbeyPerini
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mathgrrl
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Yarnlord
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Reka
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Reka
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Jar
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tangentqueen
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mathgrrl
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Flave
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Bee
generation 321
AbbeyPerini
generation 327
AbbeyPeriniÂ
generation 335
AbbeyPerini
generation 376
gottaotter
generation 406
asabest
generation 412
ToGreg
generation 413
WhiteTheDragon
generation 417
AbbeyPerini
generation 444
colettalillian
generation 476
franherr
generation 482
AbbeyPerini
generation 488
AbbeyPerini
generation 501
Reka
generation 521
Routl
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Geometrygirl
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Routl
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Mae
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Routl
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AbbeyPerini
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cay
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Reka
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spoiani
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Reka
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RacheyO
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mathgrrl
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Flave
generation 619
Veronica
generation 639
Frey
generation 666
Malou
generation 706
Flave
generation 725
Emza
generation 782
Flave
generation 901
Emza
generation 958
Flave
generation 967
Emza
generation 980
Emza
generation 1000
Malou
generation 1001
Flave
generation 1038
cay
generation 1050
Emza
generation 1146
Veronica
generation 1208
asabest
generation 1217
Flave
generation 1308
asabest
generation 1352
WhiteTheDragon
These motifs have been claimed, and community members are already working on crocheting them for the project. Please check both the "Claimed Squares" and the "Completed Squares" sections before claiming or crocheting a motif, so that none are repeated. You can claim a motif by filling out the Contact Form.Â
Note:Â To be accepted, motifs must be Rule 6, 35-50% alive, Generation between 9 and 1407, and not already claimed or completed.
generation 13
Pokygirl
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Elkie
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juneb
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neil
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hawkslaey
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Nutella
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LouisY
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heather628318
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natabat
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Merriweather
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cri-kee
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JHTorres
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Soperlein
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Malou
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amethyst
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KnotUnknot
generation 130
OPaRo
generation 135
virtualcourtney
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heather628318
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sadesf
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sadesf
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kathrynve
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hollymmath103
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Polecat
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MamaGando
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Lise
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Pinn
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Fleur
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pir
generation210
Nutella
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beelzebarb
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curiosity
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mathgrrl
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Marritme
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MamaGando
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TwoPi
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sinsonte
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Kim
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clairem
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CrochetFun
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 cri-kee
generation 318
Morphybeans
generation 327
AbbeyPerini
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JHTorres
generation 346
Yann-Situ
generation 353
natabat
generation 358
uknitcorn
generation 365
RacheyO
generation 368
polygonart6777
generation 389
curiosity
generation 395
curiosity
generation 402
kwb
generation 405
JessG
generation 406
asabest
generation 412
ToGreg
generation 419
curiosity
generation 420
NancyPants
generation 426
curiosity
generation 430
natabat
generation 445
JeannieB
generation 452
JeannieB
generation 454
KathiewW
generation 469
jax
generation 470
tangentqueen
generation 488
AbbeyPerini
generation 493
Lise
generation 495
Linda
generation 506
JeffA
generation 539
npace
generation 550
AbbeyPerini
generation 552
MoonXT
generation 556
cay
generation 561
babyspearwa
generation 564
albamath
generation 569
Hannah
generation 574
Hannah
generation 579
Hannah
generation 600
Lise
generation 617
Miki
generation 623
mathgrrl
generation 634
Lisa
generation 802
anntate
generation 865
Veronica
generation 892
mathgrrl
generation 950
tulip
generation 1045
rosstate
generation 1126
lorelei
generation 1201
brainofdane
generation 1208
asabest
generation 1375
MamaGando
generation 1157
Frey
generation 1402
amethyst
generation 1407*
mathgrrl
Squares that have been crocheted: 90
Squares that have been received: 37
Squares that have been attached: 23
WE ARE STILL ACCEPTING CLAIMS FOR SQUARES!
The artwork will be a rectangular grid of squares, and its size will depend on how many squares are actually created and received. There are still plenty of squares left to claim, and we welcome you to join the project!
We would like to recieve squares as soon as possible, and to have most of them in hand by mid-December. We will accept additional squares through January and incorporate them into the project as space and time allow.