Portrait Picross
Picross, also know as Nonograms or Griddlers, are logic puzzles that reveal a hidden picture. The cells in a grid must be colored corresponding the listed color or left blank …
How to Fold a Trihexaflexagon
Use the included templates to create these folded paper polygons that appear to have two sides. Follow the step-by-step instructions to form the included patterns, or use the included templates …
Crocheting a Mobius Strip
Use a combination of chain stitches and double crochet stitches to crochet a Mobius Strip as large or small as you wish. Using a new material, such as yarn, to …
Map Colouring and the Four Colour Theorem
Can you colour this map using only four colors? The Four Colour Theorem says that no more than four colours can be used so that the regions that share a …
Drawing Pursuit Curves
When predators hunt their prey they move along pursuit curves which can turn into logarithmic spirals when the right factors align. Recreate this pursuit on paper to explore this concept, …
How to Create String Art
A set of 90 degree axes quickly turns into a beautiful parabola with a few quick strokes or stitches. There’s no limit to what you can create as you repeat …
Golden 16
Use the brightly colored shapes surrounding the line drawing or have fun coloring the composition to create unique patterns and tilings. Experiment with adding a few extra lines to see …
Doubly Marked Robinson Tiles
These Robinson Tiles are like nothing you’ve seen before and are sure to boggle your mind! Cut them out and play around with putting them together. What structure do they …
74G4G7
In this edge-matching puzzle you’ll have to figure out how to arrange seven double-sided hexagons in a hexagonal pattern so that all of the meeting corners on both sides match …
Mathematically Correct Breakfast
Turn an ordinary breakfast into magic by following these simple instructions on how to slice a bagel into two linked halves. Not only is it more fun to eat a …
Cheshire Cat Vanish
This delightful illusion is sure to put a smile on your face as quickly as it vanishes from one Cheshire cat. All you need to do is print, cut and …
Rhombic Triacontahedron with Lizard Tessellation
This hands–on activity is wonderful fun and learning for kids–you’ll combine art and mathematics as you make a polyhedron decorated with a cool lizard tessellation. Submitted by: Robert Fathauer Time …
A Better Mousetrap
A Better Mousetrap is three-part topological effect from Magician Michael Weber, in which part of a 5×7 index card seems to magically pass from one side of a spectator’s hand …
Nobbly Wobbly Workshop
Host your own Nobbly Wobbly Workshop! Materials and resources will leave your group considering the aesthetics, psychology, and mathematics involved in quality puzzle making and solving. Submitted by: Dick Esterle …
3D Dragon Illusion
Print, Cut, Fold and assemble your very own Thinky the dragon. Close one eye and slowly move around the room. Isn’t it amazing how Thinky follows you wherever you go? …
Möbius Strip Surprise
This simple mathematical wonder seems like magic every time! You’ll only need scissors, tape and your printed PDF to create Martin Gardner’s Möbius Surprise. Before you cut, challenge your friends …
Flexagon Party
There is no better way to celebrate Martin Gardner than to throw a Flexagon party! Here you will learn how to make basic and advanced hexaflexagons and trihexaflexagons. Find books, …
Dollar Bill Geometric Vanish
Without violating the laws of physics or logic you’ll amaze your friends by showing them how seamlessly you’re able to make Martin’s face disappear from this dollar bill. Simply cut …
Vi Hart Balloon Booklet
In this edge-matching puzzle you’ll have to figure out how to arrange seven double-sided hexagons in a hexagonal pattern so that all of the meeting corners on both sides match …
Heart Mobius Strip
Turn two regular Mobius strips into linked hearts. It’s the perfect activity for Valentine’s Day or to share with friends. All you need is paper, scissors, tape and someone you …