Washington State University
Washington State University: Ask Dr. Universe: How Do Cars Work?
Website from Washington State University answers questions kids have about science, mechanics and engineering in an easy to understand format. In this letter, Dr. Universe answers questions about how the family car works.
City College of New York
City Technology: Wind Up Toy
A series of three video tutorials with accompanying written instructions demonstrating how to make a wind-up toy.
Other
Arvind Toys: Hydraulic Jack
This image tutorial walks students through the steps of making a hydraulic jack.
Concord Consortium
The Concord Consortium: Molecular Workbench: Nodding Donkey (Pump Jack)
View a simulation of the mechanics that make an oil pump do its job.