Polyhedra and Dodecahedron Day introduces participants to three-dimensional geometry. Hands-on activities give participants the experience necessary to being concepts from three-dimensional geometry into the classroom.

Accompanying documents:


• Website with a photo gallery of a course on polyhedra.


• The Dodecahedron Day 2012 poster.


• A recent video about Dodecahedron Day.


• Three proofs of the enumeration of the Platonic Solids.


• Nets for the Platonic solids. (Handout, one copy of the dodecahedron net on cardstock for each participant.)


• Enumeration of the Archimedean solids (as well as other topics).


• Activity involving Euler's formula. (Handout.)


• Website for downloading the stellation applet.


• Net for the small stellated dodecahedron. (Handout, six copies (different colors) on cardstock for each group of 3–4 participants; a few extra copies of each color in case of mistakes.)


• Net for the rhombic dodecahedron. (Handout, one copy on cardstock for each participant.)


• Net for the geodesic dodecahedron. (Handout, six copies (different colors) on cardstock creates two models for 6–8 participants; a few extra copies of each color in case of mistakes.)


• Polyhedra text bookmarking additional topics.