The following books and websites contain additional information, activities, and enrichment options. The books may be available through publishers, distributors such as bookstores or online retailers, or library systems.

For Students

Solid, Liquid or Gas?
Sally Hewitt, Children's Press, 1998
Solids, Liquids, Gases
Charnan Simon, Compass Point Books, 2000
What Is the World Made Of? All About Solids, Liquids, and Gases
Kathleen Weidner Zoehfeld, HarperTrophy, 1998

For Teachers

Experiments with Solids, Liquids and Gases
Salvatore Tocci, Children's Press, 2002


See the Best of the Net feature at and sites recommended by the National Science Teachers Association at