EXTRA-CURRICULAR MATH MATERIALS

• "Hexaflexagon Construction"
  "Take a chain of congruent triangles on strip of paper, fold it, and the fun begins.
• "Hexaflexagon From Plain Paper Construction"
  "Take a sheet of paper and determine the width of the paper to create the required chain of congruent triangles.
   

• "Ernest Ranucci's Tetra-tetra Flexagon" - ORIGINAL 9/23/98 VERSION Take a sheet of paper, fold it, and the fun begins. Directions for folding and the front and back of an illustrated tetra-tetra flexagon. STEP-BY-STEP INSTRUCTIONS
• "Ernest Ranucci's Tetra-tetra Flexagon" - 11/2025 VERSION Take a sheet of paper, fold it, and the fun begins. Directions for folding and the front and back of an illustrated tetra-tetra flexagon. ONE IMAGE W/INSTRUCTIONS & EACH PAGE LISTED
   

• "Kaleidocycles" by the net method -- Take paper, make a chain of pyramids, and flex!
• "Hexaflexagons & Kaleidocycles" -- Very lovely & playful topology. Includes masters.
   

• "Moebius Strip Construction" -- Take a strip of paper, twist it, and the fun begins.
   

• "Origami Cube - Patsy Wang-Iverson Version"
  Take 6 sheets of square paper, with edges twice the length of the desired edge, and ...
   

• "Braid A Centimeter Cube - Gloria Sanok" -- Braid a net of squares to weave a cm, or other, cube.
• "Gloria Sanok's Liter Box" -- Cut open a paper bag, make a 30 cm by 30 cm sheet of paper, fold and clip to create a liter box.
• Other metric materials found at: Metric Materials