Build a durable model of each of the five regular polyhedra (Platonic solids) from a flattened pattern or net. The surface of each has been decorated for you with a projection of the earth in full color. [A projection is a way of unwrapping and warping a spherical surface so that it will lie down flat.]
Tetrahedron Octahedron Icosahedron Cube Dodecahedron

Click on the name of a polyhedron to access its net. Each file will require Adobe Acrobat Reader. Print on the heaviest weight of 8.5 x 11-inch card stock your printer will allow. Score along the line edges of the constituent regular polygons (as delineated by the edges and tabs) with a darning needle or poultry lacer and a ruler as straight edge, applying minimal pressure. Cut out the net along its perimeter. Fold backwards (unprinted side to unprinted side) on all scoring lines. Fix tabs in place with glue, keeping in mind the shape of the eventual polyhedron.

The nets were generated using the Flexify-2 plug-in filter with Photoshop. The input high resolution map cam be downloaded here. A reduction of the input map is reproduced below.

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