The following books and websites contain additional information, activities, and enrichment options.


Cells and Systems
Holly Wallace, Heinemann, 2003
Human Body
Steve Parker, DK, 2004
The World of the Cell: Life on a Small Scale
Robert Snedden, Heinemann, 2002


My Body—Shockwave Version
Inside the Human Body—The Respiratory System

For additional websites, see the Best of the Net feature at and sites recommended by the National Science Teachers Association at