Mathematics & Illusion

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The book's softcover surface contains swirling lines of blue, white, gold, and red that create a swirling optical illusion. The trim is black; the text is white and gold.
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Seeing: 30 Hands-On Visual Discoveries by the Exploratorium
$ 14.95
Prolate ellipsoid made out of sold non-magnetic aluminum that, when one spins on its side, will flip upright and continue to spin. It sits upon a flat round mirror encased with a black rim.
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Aluminum PhiTOP
$ 20.00
It is a black ceramic mug with a black and white circular optical illusion etched on the front.
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Exploratorium Optical Illusion Mug
$ 15.95
The game's cover is purple with transparent numbers in the background; there is a magician holding a wand on top of a cloud with the words "Proof!" in red.
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Proof!
$ 17.99
A white box with graph paper lines with Math Fluxx and zero through eight filled in with different colors.
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Math Fluxx
$ 20.00
"Math with Bad Drawings" is a hardcover light blue book with mathematical equations in gray and a stick figure character in the right corner.
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Math with Bad Drawings: Illuminating the Ideas That Shape Our Reality by Ben Olin
$ 30.00
A paperback book that is 10.9" x 8.8". The cover is beige with text down the front. There are squares and a circle on one side.
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Can You Solve My Problems?: Ingenious, Perplexing, and Totally Satisfying Math and Logic Puzzles by Alex Bellos
$ 15.95
"The Ultimate Book of Optical Illusions" is a softback copy with a white cover; contrasting legs create an optical illusion.
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The Ultimate Book of Optical Illusions by Al Seckel
$ 21.99
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8" x 8" board book illustrated book cover of the ABCs of Mathematics. Three circles with Addition, Base, and Chord. Red spine with science tools in white .
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ABCs of Mathematics by Chris Ferrie
$ 9.99
A light blue book with an illustration of Ada Lovelace on the cover.
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Little People, Big Dreams Ada Lovelace by Maria Isabel Sánchez Vegara
$ 15.99
"Grandpa Magic" is a softcover book with a yellow, blue, and red illustration of an older male magician doing dazzling an audience of kids with lightning from fingertips.
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Grandpa Magic: 116 Easy Tricks, Amazing Brainteasers, and Simple Stunts to Wow the Grandkids by Alan Zola Krenzek
$ 17.95
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A 16oz pint glass with an image of Ada Lovelace with math symbols around the outside printed in black. A golden beer fills the clear glass to show contrast against the black printed sections.
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Ada Lovelace Pint Glass
$ 18.95
A clear cake dish with a Pi symbol brown sugar cake dusted with powdered sugar.
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Exploratorium Pi Cake Pan
$ 16.99
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The Miracope is a black circular shape with mirrored optics that projects a green frog into a three-dimensional floating position on top. 
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3-D Mirascope
$ 11.00
Blue, red and white packaging surrounds two white 12-sided target dice and three blue scoring dice; a blue pouch and sample dice sit in front.
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Math Dice
$ 7.95
The book's softcover surface contains swirling lines of blue, white, gold, and red that create a swirling optical illusion. The trim is black; the text is white and gold.
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Viendo: 30 Descubrimientos Visuales Interactivos
$ 14.95
A white book with a black and white lenticular image of a horse that moves with the book. The book title Gallop! and the author's name are in different colored letters at the top.
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Gallop!: A Scanimation Picture Book by Rufus Butler Seder
$ 16.95
A blue and white book with a white optical illusion looks like a duck or a rabbit on the bottom. Above the words Duck! Rabbit! is in black text.
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Duck!, Rabbit! by Amy Krouse Rosenthal, Illustrated by Tom Lichtenheld
$ 7.99
Tin cookie cutter made out of the tin in the shape of the Pi symbol.
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Exploratorium Pi Cookie Cutter
$ 3.95
Sushi Go! comes in a large red tin with the sushi characters on the outside; there are five cards with muted colors in purple, green, blue, pink, and yellow with different character cards such as wasabi, tempura, and chopsticks
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Sushi Go!
$ 13.99
The math-themed rocks glass is etched with digits of Pi for your detail-oriented side, and an approximation of Pi.
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Pi Theorem Rocks Glass
$ 18.00
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A large pint glass filled with beer. Math-themed etched shaker glass features the digits of Pi opposite Kochanski's construction of his approximation of Pi.
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Pi Theorem Pi-nt Glass
$ 20.00
A white paperback book with half of a pie with a slice taken out on the bottom on a red and white checkered tablecloth. "How To Bake π" is in red above.
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How to Bake Pi: An Edible Exploration of the Mathematics of Mathematics by Eugenia Cheng
$ 17.99
Dark gray socks with Pi symbol and 85 digits of Pi in white and green.
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85 Digits of Pi Sock
$ 13.95