Scholastic
Scholastic: Dirtmeister's Science Reporters: Simple Machines: The Wedge
Scholastic provides an in-depth explanation to a simple-machine concept here as The Wedge. Also provides a picture and several examples for understanding.
Washington State University
Washington State University: Ask Dr. Universe: What Are Fingernails Made Of?
Find out what fingernails are made of when Dr. Universe talks with her friend Professor Lisa Carloye from the biology department at WSU.
Hunkins Experiments
Hunkin's Experiments: Electric Shocks!!
Hunkin's Experiments is a group of simple cartoon illustrations of scientific principles. Some would work well in the classroom, but others have little value beyond entertaining students. All of the projects are easy to do. These...
CK-12 Foundation
Ck 12: Biology: Nails and Hair
[Free Registration/Login may be required to access all resource tools.] Discusses the structure and functions of the hair and nails.
University of Houston
University of Houston: Simple Machines Learning Site: Wedge
Several examples, along with a definition and explanation of the simple machine, the wedge.
