How an Obsolete Copy Machine Started a Revolution
Learning Links – 4-H and more!, King County
Virtual Field Trip: The Tech Interactive - Connecticut Science Center
Do On Your OWN!
Duplicating Drawing Machine - Classful
Do On Your OWN!
Crank Out Infinite Geometric Designs With The Wooden Cycloid Drawing Machine — Colossal
Kid's Art Frame DIY - A Beautiful Mess
Virtual Field Trip: The Tech Interactive - Connecticut Science Center