1000 Limericks Booklet (by Sarah Hart)
How to fit over a thousand poems on a single sheet of paper This was an activity I created for G4G15, but feel free to modify it however you like. …
Geometric Cardboard Sculpture
Assemble a giant mathematical sculpture from laser-cut cardboard components. Full instructions available online.
A Woven Klein Quartic
We describe a new method of weaving a model of the Klein quartic, a highly symmetric, but abstract genus-3 surface akin to a platonic polyhedron, with negatively-curved geometry. The Klein …
Large Hat Tiling
After decades of research, an aperiodic monotile known as the “hat” was discovered in 2023. Make a large patch of this tiling from pre-cut paper pieces. Learning how to position …
Large Spectre Tiling
Make a large patch of the “spectre” aperiodic tiling from pre-cut paper pieces. Download Activity Instructions PDF Download Animated Instructions (Keynote) Download Animated Instructions (HTML) Download individual figures (PDF): Spectre-2 …
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 …
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 …
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? …