Useful links from my talk “101 ways to make a dodecahedron”
Video showing dodecahedron from net with elastic band
Video by James Grime showing how to make post-it note dodecahedron
Post-it dodecahedron written instructions
This link has more information about making shapes from woven loo roll middles
https://www.geogebra.org/ is powerful and free software that can be used for 3D geometry and much more.