Browse Items (128 total)

https://www.gathering4gardner.org/g4g14gift/ExchangeArchive-QFnomogram-G14-067-1.jpg
This is a cute graphical computing device which finds the roots of a quadratic polynomial. Stretch the (included) string between two scales representing the coefficients of the polynomial, and it tells you the roots! This device is based on an…

ExchangeArchive-Superposition-G14-004-1.jpg
Physical gift a small E link puzzle and a puzzle postcard.
Paper 'Multiplication by Superposition' - PuzzleAtomic.com

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https://www.gathering4gardner.org/g4g14gift/ExchangeArchive-DiceLab-G14-031-1.jpg
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.

ExchangeArchive-Klein-G14-017-1.jpg
It's a Klein bottle 3D printed in resin in a pendent with a mobius strip tag.

ExchangeArchive-ForestCards-G14-010-1.jpg
Text by: David G. Haskell,
Illustrations by: Ellen Litwiller

https://www.gathering4gardner.org/g4g14gift/ExchangeArchive-Pearl-G14-008-2.jpg
Applying the planar puzzle mechanism of the Magic Disc puzzle to a three-dimensional form yields an interesting and challenging coordinate motion puzzle.

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https://www.gathering4gardner.org/g4g14gift/ExchangeArchive-Menu-G14-039-1.jpg
A puzzle hunt hidden inside an 8-page pamphlet.

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