Schedule
Art, Crafts, & DIY
- Kenneth Brecher — Rolloids Paper
- Vladimir Bulatov — Symmetry in Chaos
- Robert J. Lang — G4G16 Origami Star
- Lew Lefton — 3D Wire Flexagon from Household Objects
- David Richeson — Constructing a Large 251-point String Art Cardioid
Games
- Barry Cipra — Bridge Made Simple
- Wei-Hwa Huang — Not Quite Sudoku
- Christian Hummert — Spotted It! – New Insights into Win Dobble
- Margaret Kepner — Snake in a Crate [Stripe-ominoes]
- Joe Kisenwether — Non-Transitive Bingo
- Byron Russell — Why Do We Play Go?
- Art Terlep — Bauhaus
Illusion & Magical Education
- Nancy Blachman — Cat, Dog, and Mouse Magic
- Louis H Kauffman — Rope Magic and Topoligy
- Emrehan Halici — 5 PROBLEMS
- Jon Stadler — A New Twist on an Old Number Divination Trick
- Rodi Steinig — How I Stage Mathematical Magic Tricks for Children
Recreational Mathematics
- Gabriel Bradley — Snugohedra
- Joseph DeVincentis — Nicomachus’s Theorem
- Sean Graves — Using Juggling Diagrams with Four-Ball Patterns
- Shyam Sunder Gupta — Equal Product of Reversible Numbers (EPRNs)
- Ivo Fagundes David de Oliveira — The Second Cheapest Way to Tie a Ribbon
- Fred Henle — Constrained Solving of a Rubik’s Cube
- Robin Houston — Tetrahedral Building Blocks
- Tom Howell — A Sudoku Checking Problem
- Scott Kim — How to Draw a Hypercube with Pen or String
- Nelson Max — Uniform Tilings on the Sphere, the Plane, and the Hyperbolic Plane
- Dana Mackenzie — Cyclic Permutation Cryptarithms
- Louis Romero — The Flipping Conjecture & Conservation Laws with Pattern Blocks
- Karl Schaffer — Decomposing the Skeletons of Polyhedra and Related Puzzles
- Iz Tecúm — Comparing Classical and Path Coupling Bounds in Finite-State Markov Chains: A Graph-Coloring Case Study
- Hideki Tsuiki — Fractal 3D Tiles with Tetrahedral Symmetry
- Tomas Rokicki — Kracking the Kilominx
- Inna Zakharevich — Cancelling Digits, Simplifying Fractions
Literature & Legacy
- Lyman Hurd — Martin Gardner, My Father and Me
- Stan Isaacs — The Stanford Martin Gardner Archives
- Dana Richards — Chautauqua and Mishiwaka
- Lhianna Bodiford — Wonderful World of Women in Mathematics Zine and Activity Book
- Tom Bessoir — The Permutated Poems of Brion Gysin
- Dmitri Droujkov — The Future Book Club at the Math Maker Neighborhood
- Francisco Albuquerque-Picado — The Marcelo Number
Puzzles
- Nick Baxter — Castling
- Amara Cohen — Area Maze Puzzles
- Adam Chalcraft — A 10-unique Sudoku Puzzle
- Mark Engelberg — Logic Puzzle
- Rik van Grol — Puzzle Food; Even More Food for Thought?
- Jim Henle — Doppel-ganger Puzzles
- Dick Hess — Puzzles That Will Have You Running In Circles
- Haym Hirsh — G4G16 Puzzle
- Max Hughes — T Puzzle
- Kate Jones — Sweet Sixteens
- Justin Kalef — I tried…
- Michael Keith — How Many NxN British-style Crossword Grids are There?
- Rodolfo Kurchan — ONE UP Puzzle
- Josh Laison — Polycube Perception Puzzles
- Steven Landsburg — Cryptonyms
- Roy Leban — Connect the Dots
- David Petrie Moulton — G4G16-themed Skyscrapers Puzzle, Plus Pangram and Mnemonic
- Rick Rubenstein — Gee Whiz!
- James Stephens — The Gardening to Gather Puzzle
Science & Skepticism
- Doug Engel — A Paper For Mind
- Eva Greenebaum & Ken Greenebaum — Making Color with Birefringence
- Akio Hizume — Poly-Twistor of Precessed Elliptical Orbit
- Debbie Denise Reese — Bob Crelin’s Moon Gazers’ Wheel and Moon Gazers’ Wheel Users Guide
***Important Note Regarding Gift Exchange Copyright***
In the spirit of Martin Gardner, who believed in inclusiveness and the sharing of knowledge and curiosity, and as a non-profit that benefits from the generosity of our community, G4G is pleased to give back to the world by making the G4Gn Gift Exchange Books available for download online.
However, these papers are a compilation of original material and the contributors retain their copyrights. No part of the Gift Exchange Books may be reproduced or distributed in any form, without prior written permission from the original author. If you would like to request permission to reproduce or alter any G4G paper, please contact support@g4gfoundation.org and we can put you in contact with the author.