Browse Items (176 total)

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Cloth-G13-058-1.jpg
Martin Gardner suggested the best way to wake up a student and Lewis Carroll woke up many students with his book Alice's Adventures in Wonderland.

Our gift, a microfiber cloth, presents some of Martin Gardner's and Lewis Carroll's words together…

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Urabe-G13-090-1.jpg
I was surprised at M.C. Escher’s exhibition in 1982 and hoped to create a tiling pattern by myself. But I worried about creating everyday, and time was gone without any one pattern during 2 months. When I watched Escher’s sketch book, I found thinner…

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Rabbit-G13-108-1.jpg

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Tangle-G13-080-1.jpg
G4G Give-away

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Opticalillusion-G13-102-1.jpg

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Mobius-G13-106-1.jpg

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-GeometricBall-G13-103-1.jpg

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ExchangeArchive-Pentagons-G13-031-1.jpg
This item for the Gift Exchange is a 3D printed baker's dozen of irregular pentagons that tessellate the plane.

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Tridecahedron-G13-033-1.jpg
This net is similar to those in my 'Cubes and Things' 3D coloring books, where I use playful patterns to accent symmetries of polyhedra. By truncating one vertex of a dodecahedron, it becomes a tridecahedron. (Do you think truncating all the corners…

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-StackTwo-G13-078-1.jpg
Two transparency sheets chosen at random from a larger selection. Combining any two different sheets reveals a different secret image. Exchange recipients are encouraged to find each other and combine sheets to reveal all of the images.

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-XYChart-G13-088-1.jpg
My gift exchange item is called an X-Y Chart. It is a very unique chart of multiplication facts for elementary school students. My friend, Joe Speier, who was concerned about children learning their multiplication facts designed the chart. During a…

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Tax-G13-109-1.jpg
Bill Gosper shared this problem with me. He calls it the Tax Man Problem. In the province of Peculia Pecunia, you are paid on an annular basis. That is, you get a (unit radius) gold disk from whose center is punched a smaller disk which you donate to…

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Wolfram-G13-105-1.jpg
Assemble a paper sculpture of the Wolfram logo, affectionately known as "The Spikey".

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-ShiftingMaze-G13-107-1.jpg
A maze on a flexagon, where the faces keep getting rearranged, adding an additional challenge to finding your way through the maze.

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-RealRubiks-G13-083-1.jpg
My submission is an image featuring six cubes that all look like scrambled Rubik's cubes. But only one is. The other five all have some error impossible to find on a traditional cube. Can you suss out which it is and thereby find The Real Rubik's?

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Hidden13-G13-025-1.jpg
A diecut construction model. Assemble it to discover the missing 13th piece.

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Icosian-G13-013-1.jpg
A game created by Sir William Rowan Hamilton. A traveler must visit 20 cities without revisiting any of them.

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Particle-G13-030-1.jpg
Noted high energy particle psychic Fermi Geller is conducting a study of detox particles in his lab. He has successfully generated 13 new particles of Woo-ium in his reactor, but he needs to move the particles into the numerologically stable…

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-13Piece-G13-012-1.jpg
Thirteen is an odd number of pieces for a complete set puzzle. I found one such set and created a puzzle using it.

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