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Spiram Siderum
A craft kit with all parts needed to crate a tiny kinetic sculpture based on the physics of equilibrium, magnetic force, and angular momentum.
Spixel Puzzle
On the picture you can see the visual design of my Gift Exchange item. The object is based on aligning RGB Spidron puzzles.
Tensegritiy Pop-up
In each envelope there will be Kenneth Snelson-like tensegrity flattened inside. As you pull it out, it will pop up to a 3D sculpture.
The 13-Zone System
A zometool-based geometrical model/puzzle based on the 13-zone system, i.e., 3 blue lines, 4 yellow lines and 6 green lines, which are associated with the face centers, vertices and edge centers of the cube.
The 14 Two-Color Frieze Symmetries in Mosaic Knitting
Mosaic knitting, a relatively new form of two-color knitting, has become popular because it is easier for the knitter than most traditional forms of color work. The price of this ease is an unusual set of restrictions on color placement for the…
The Missing 13th
A diecut construction model. Assemble it to discover the missing 13th piece.
The Spikey Sculpture Kit
Assemble a paper sculpture of the Wolfram logo, affectionately known as "The Spikey".
Transparent Sheets
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.
Tridecahedron Net
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…
Urabe-Pattern
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…
Veternary - Magic Trick
An animal based who-is-who in which with the right three questions any animal becomes uniquely identified using a ternary "sieve". For the first 16 animals this also works in binary.
Waking Up a Student and Seeing Nobody
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…
Our gift, a microfiber cloth, presents some of Martin Gardner's and Lewis Carroll's words together…
Winning Ways HexaFlexagon
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 –…
Elwyn Berlekamp: Sept 6 1940 – Apr 9 2019
Richard Guy – Sept 30 1916 – Mar 9 2020
John Horton Conway: Dec 26 1937 –…