Browse Items (110 total)

https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-ChiralityOfFlexagons-G15-131-1.pdf
A chiral flexagons with a secret message

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https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-152-rep-tileofFpolyomino-G15-098-1.jpg
I provide 15^2-rep-tile in new packing found in 2022. They are made by MDF and acrylic.

https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-LizardTile-G15-053-1.jpg
Martin Gardner was fascinated by tessellations, as am I. This year I have decided to share a 3D printed model of a fun math tile that we have been using in our Math Carnivals in the Republic of Panama, organized by the Panamanian Foundation for the…

https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-SmallLasercutInfinityCube-G15-132-1.pdf
A very small infinity cube with acrylic 2-way mirrors on the inside, with a hole for inserting a light source. Comes as a kit: 6 laser cut squares with finger joints and a small keychain light.

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https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-SixtiesSculpture-G15-129-1.pdf
This will be a make it yourself sculpture kit.

https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-MGRandomlyGeneratedCelticKnot-G15-128-1.pdf
This is a physical item, but the item is a piece of paper. My Celtic knot generator will create 200 unique randomly generated knots, that all spell out Martin Gardner's name. I will provide a printout of the rendered knot and the instructions on how…

https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-ZoneProximaMath-G15-125-1.pdf
The physical gift bag Zone Proxima Math flier title: Zone Proxima presents Early Childhood Math: Ages 4.5 - 6.5
In the spirit of G4G, Zone Proxima offers the opportunity for adults (parents, caregivers, educators, and philanthropists) to improve…

https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-ButtonholePuzzle-G15-122-1.jpg
Small stick with loop of string through one end. Small enough to fit in a snack size Ziploc baggie with an information card.

https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-BewaretheIdeasofMath-G15-121-1.pdf
It is a long G4G tradition that for G4GX that there are two speakers, one of which extols the number X and one which cast aspersions on X. This the latter effort.

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https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-ElevatingGDs-G15-119-1.pdf
Elevating tessellations to act as nets for geodesic domes have many applications in structural engineering, math, and synthetic biology. In this paper I describe a net and a 3D version of a heptagon-containing polyhedra, as well as sphericity…

https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-HatFlexagon-G15-117-1.pdf
The hat flexagon, inspired by the recent discovery of the hat monotile

https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-CreationofNaturalSymmetricPatterns-G15-116-1.pdf
Computer simulation of complex dynamical system is used to create seamless symmetric patterns

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https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-JDT15puzzleResearch-G15-115-1.pdf
The French name for the Fifteen Puzzle is "Jeu de Taquin". The generalization by Schützenberger to Young tableaux has many amazing properties, and important applications in combinatorics, representation theory and algebraic geometry.

https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-DigitsofPiDVD-G15-114-1.jpg
A DVD of the 3 m 14 s long film Digits of Pi

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https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-Tacorama-G15-113-1.pdf
Printed Tacorama Card Game and mathematical exploration thereof

https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-3dHexaflexagon-G15-112-1.jpg
A simple flexagon that's a great pocket fidget toy too.
With permission from designer: whpthomas at thingiverse.com

https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-15Puzzle-G15-111-1.jpg
One version of the famous 15 Puzzle (on which the G4G15 logo is based), that Martin Gardner described on the pages of Scientific American (1957).

https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-CircoMathematicoCards-G15-110-1.png
For it's decade of existence the Circo Matemático (mathematical circus), a autonome group of popularisers of mathematics part of the Ludus Association, designed a deck of cards.

The poker-sized cards (63x88 mm) are COPAG 310 quality, slimline, with…

https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-GosperFidget-G15-109-1.png
This is a 3D printed space filling curve cased on the Gosper curve. It is surprisingly flexible and invertible. I originally printed it for a tactile experience with a space filling curve, but my colleagues loved it so much I thought it would be a…

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https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-MathHumorPaper-G15-108-1.pdf
I will present my favorite jokes

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https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-CLDMathWhereYouLeastExpectIt2-G15-107-1.pdf
Examples of how Lewis Carroll used math concepts to explain unmathematical topics

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https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-WaitingLines-G15-106-1.pdf
The book chapter on which my presentation at the conference will be based.

https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-PentadecahedronNet-G15-104-1.pdf
2 paper nets for this polyhedron composed of 15 faces, with 2 different face types.

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https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-4PaperProjects-G15-102-1.pdf
My gift has four cardstock patterns for you to assemble at home: band trefoil, stella octangula, excavated dodecahedron and the fourteenth stellation of icosahedron. I'll bring a printout or cutout copy of the first three projects as well.

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https://www.gathering4gardner.org/g4g15gift/ExchangeArchive-BarriersToMathJoy-G15-100-1.pdf
Martin Gardner wrote changed the lives of thousands of people with his writings. But even he felt powerless to bring joyful mathematics into classrooms. In this article, I discuss the barriers to the widespread adoption of recreational mathematics…
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