Module 3: Physics

Lesson 3.3D: Compound Machines
No More Oversleeping
http://www.utexas.edu/features/archive/2003/rube.html

More on Rube Goldberg:
The Official Rube Goldberg Web Site
http://www.rube-goldberg.com/

Toonopedia
http://www.toonopedia.com/goldberg.htm