Simple Machine Interactive Activities http://www.edheads.org/activities/simple-machines/
Fun Activities Related to Force and Simple Machines http://www.edheads.org/activities/odd_machine/
Interactive Pushes and Pulls Activities http://www.bbc.co.uk/schools/scienceclips/ages/5_6/pushes_pulls.shtml
Interactive Activities to Learn about Friction http://www.bbc.co.uk/schools/scienceclips/ages/8_9/friction.shtml
This roller coaster simulator is designed for kids who want to design their own thrilling coaster and educators who want to use a cool activity to simulate the application of physics by using an exciting interactive tool. http://www.funderstanding.com/k12/coaster/
Watch Rube Goldberg Machine Contest competition videos. http://www.rubemachine.com/
Purdue University's entry to Rube Goldberg Machine Competition. http://news.uns.purdue.edu/mov/2005/rube05localwinner.mov
Rube Goldberg Machine Contest Winner 2007- Ferris State University http://www.ferris.edu/news/week/video/rube/