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

http://www.kidshealth.org/kid/body/index.html

Inside the Human Body—The Respiratory System

http://www.lung.ca/children/index_kids.html

For additional websites, see the Best of the Net feature at www.eduplace.com/science and sites recommended by the National Science Teachers Association at www2.nsta.org/sciencesites/