The physical gift bag Zone Proxima Math flier title: Zone Proxima presents Early Childhood Math: Ages 4.5 - 6.5
In the spirit of G4G, Zone Proxima offers the opportunity for adults (parents, caregivers, educators, and philanthropists) to improve…
Elevating tessellations to act as nets for geodesic domes have many applications in structural engineering, math, and synthetic biology. In this paper I describe a net and a 3D version of a heptagon-containing polyhedra, as well as sphericity…
For it's decade of existence the Circo Matemático (mathematical circus), a autonome group of popularisers of mathematics part of the Ludus Association, designed a deck of cards.
The poker-sized cards (63x88 mm) are COPAG 310 quality, slimline, with…
The MESMOID is a right circular cylinder with an eccentric circle cut out of it. Because of its design, it can act like a rolling pendulum. Unlike a coin or wheel, when rolled it moves back and forth instead of in one direction only.
It is a…
When you spin a penny on a smooth tabletop and let it fall heads or tails, is there a bias toward one side? Or is it a 50/50 expectation? Martin Gardner claimed over the years that there is a heads bias, or a tails bias, but didn't explain why he…
Mathematics can help illuminate and enrich our understanding of the many patterns found in a botanical garden. Instances of spirals, fractals, Fibonacci numbers, spherical geometry, and various types of symmetry, all among Martin Gardner's favorite…
In the spirit of G4G, Zone Proxima offers the opportunity for adults (parents, caregivers, educators, and philanthropists) to improve individual and collective mathematics achievement. Zone Proxima Math inspires young children to solve mathematics…
People may think computer punch cards are obsolete, but their durable form factor mean they are a fascinating snapshot into how people stored data and wrote programs over fifty years ago. I've acquired several boxes of punch cards which were used in…
This item is a postcard announcing The Book of Why, by Judea Pearl and Dana Mackenzie, a book to be published in May 2018 by Basic Books. This book confronts the hoary old adage, "Correlation is not causation," which has been taught to generations of…
Two Lenticular cards from Germany - one shows Pangea the last supercontinent 300 million years ago, and the second card shows the map of the globe in the next Heat Age when all the ice melts. This may result in a net gain in land!
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.