The Shifting Maze
Puzzle
Toy
A maze on a flexagon, where the faces keep getting rearranged, adding an additional challenge to finding your way through the maze.
G4G13
Scott Sherman
public
G13-107
untitled (geometric ball)
Art
Toy
G4G13
unknown unknown
public
G13-103
untitled (optical illusion)
Art
Toy
G4G13
unknown unknown
public
G13-102
13 Sided and Suits Dice
Game
Game, Toy, Rec Math
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.
G4G13
Robert Fathauer
Henry Segerman
public
G13-082
untitled (Tangle toy)
Puzzle
Toy
G4G Give-away
G4G13
NA NA
public
G13-080
Knotted Bracelet
Puzzle
Toy
Science
A hand-made rubber bracelet in the form of a trefoil knot. It is a mathematical curiosity, a puzzle, an impossible object, and a piece of nerdy jewelry.
G4G13
George Hart
Elisabeth Heathfield
public
G13-016
Surface Tension Bar Bet
Game
Toy
Science
It is a set of objects (one yen, match, cheerio, etc.) with a small instruction sheet for puzzle/ bets and references.
G4G13
Tiago Hirth
public
G13-014
Quandong Seeds Puzzle
Puzzle
Toy
A simple puzzle made using Quandong (desert peach) seeds. Quandongs can be found throughout the arid areas of Central Australia and are an important food source for people and native fauna such as emu.
G4G13
Belinda Keir
public
G13-011
Jerry Slocum Mechanical Puzzle Collection Trihexaflexagon
Puzzle
Toy
The item I would like to submit for the G4G14 Gift exchange is a copy of a give-away puzzle, developed by the IU Libraries, to advertise the Jerry Slocum Mechanical Puzzle Collection. This promotional item features a trihexaflexagon and informational sheet. On one side of the informational sheet is a short history of the flexagon, Martin Gardner and the Jerry Slocum Mechanical Puzzle Collection. The other side includes directions for making the trihexaflexagon. When the trihexaflexagon is formed, the three faces include additional information on the Slocum Mechanical Puzzle Collection.
G4G14
Andrew Rhoda
G14-065
Winning Ways HexaFlexagon
Puzzle
Art
Toy
Sadly, all within 13 months of each other, the three authors of the iconic book Winning Ways for Your Mathematical Plays passed away.
Elwyn Berlekamp: Sept 6 1940 – Apr 9 2019
Richard Guy – Sept 30 1916 – Mar 9 2020
John Horton Conway: Dec 26 1937 – Apr 11 2020
All three were friends with Martin and were regulars at the Gathering. Their legacies are grand, and their presence will all be missed.
G4G14
Sean Graves
G14-058
The Art of Destroying Flexagons
Puzzle
Toy
Recreational Math
Destroying flexagons can be fun and artistic! We suggest 4 different ways to artistically destroy flexagons, each with its own merit. Our exchange gift is a set of 4 flexagons strips, one for each demonstration and the attached explanation sheet.
G4G14
Yossi Elran
G14-054
Travel Straws
Toy
Re-usable straws in a little keychain-round container with G4G logo (from 2021 conference that was postponed) on it.
G4G14
Delicia Kamins
G14-038
Flippe Top
Toy
This document describes how I designed a new kind of top, which flips not just once, but over and over. I call it a "flippe top". It can be made either from wood or by 3D printing.
G4G14
George Bell
G14-035
14-sided and Skew 8-sided Dice
Toy
Recreational Math
A fair 14-sided die in the form of a heptagonal trapezohedron and a fair 8-sided die ("Skew d8") in the form of a triangular dihedron.
Dice Lab
G4G14
Robert Fathauer
Henry Segerman
G14-031