Browse Items (98 total)

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-HyperbolicPlane-G13-052-1.jpg
A scissors and tape activity on a letter sized sheet of cardstock, for building a horocyclic model of the hyperbolic plane, with a postcard-sized memento of of our sculpture build attached.

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Tiling-G13-053-1.jpg
A circle sticker with an image of a hyperbolic tiling of 4-gons and 13-gons.

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-KenKen-G13-054-1.jpg
“Kencils”, jumbo pencils with sample puzzle sheet

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Knight-G13-055-1.jpg
Knight mazes are a set of squares on a square lattice upon which a chess knight may move. We examine elements of mazes which can be both attractive and puzzling, and discuss two methods of creating mazes.

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-FoldPuzzle-G13-056-1.jpg
Folding puzzle designed by Markus Götz.

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Clock-G13-057-1.jpg
A clock face showing the logo for G4Gn at the nth hour, for n=5-12, and the G4G13 logo in the center, and miscellaneous MG items for hours1-4.

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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-Money-G13-059-1.jpg
Martin Gardner introduced me to Vanishing Area Paradox Puzzles in Aha! Gotcha! with the Vanishing Leprechaun Puzzle. He explained the paradox by describing an old counterfeiting method. I've learned the method and so I'm going to share it with you.…

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Nontransitive-G13-060-1.jpg
With nontransitive dice you can always pick a dice with a better chance of winning than your opponent. There are well known sets of three or sets of four nontransitive dice. Here we explore designing a set of nontransitive dice that allows the player…

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Masochists-G13-061-1.jpg
This is a summary of mental factoring, the essential information condensed into two pages.

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Panama-G13-063-1.jpg
My gift is an Ace of Spades personalized with a unique image that combines the G4G logo together with a symbolic representation of Panamanian culture.

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-PiTop-G13-065-1.jpg
Pi is certainly one of the most important numbers in mathematics, physics, engineering and, indeed, in all scientific and even some artistic subjects. I have developed a new object which makes Pi tangible in novel tactile, acoustic and visual ways.…

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Walls-G13-066-1.jpg
The gift is a postcard with a few examples of a Japanese pencil-and-paper logic grid puzzle on it.

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-NestingBox-G13-068-1.jpg
The puzzle consists of two boxes, with lids, One box is white and the other is blue. Place the white box inside of the blue box and close the lid. Now open the blue box and remove the white box. Next place the blue box inside of the white box and…

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-PolyTable-G13-070-1.jpg
It is a classification of 3D Tori. This catalog consists of 14 page which lists the Poly-Twistor models updated in January 2018.

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-SculpturalGardner-G13-071-1.jpg
My contribution to the gift exchange is a 5 X 7 inch, four-color, tri-fold glossy card with photographed imagery of my 11 X 12 X 9 inch multifaceted-portrait-sculpture of Martin Gardner. My painted, kiln-fired, stained glass and…

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-SerpentineSymmetries-G13-072-1.jpg
A full-color printed card showing and explaining Serpentine Symmetries, a beaded jewelry set that illustrates the 13 wallpaper groups compatible with bead crochet rope. Serpentine Symmetries was part of the 2018 Joint Mathematics Meetings Exhibition…

https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-SpaceChips-G13-073-1.jpg
Space Chips are a versatile building toy. With the same chips you can build 3D shapes that are symmetrical, or you can build 3D characters that are expressive and creative.

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-SpaceLogic-G13-074-1.jpg
A single two sided heavy page detailing some research on linked circles, space numbers and space logic as a physical gift. In addition a downloaded paper on the same subjects with more details.

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-SpanningTree-G13-075-1.jpg
Artwork of a low-resolution figurative tree.

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Spixel-G13-077-1.jpg
On the picture you can see the visual design of my Gift Exchange item. The object is based on aligning RGB Spidron puzzles.

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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-Tangle-G13-080-1.jpg
G4G Give-away

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-Poker-G13-081-1.jpg
It combines a deck of playing cards, tangram puzzle illustration, folk games (Chinese zodiac) in one set.

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https://www.gathering4gardner.org/g4g13gift/ExchangeArchive-SuitsDice-G13-082-1.jpg
This pair of unique dice consists of a 13-sided die with both numbers and face-card labels for J, Q, K, and A, along with a 4-sided die with the standard playing card suits.
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