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

Crumbling Earth: Erosion and Landslides

Mary Colson, Raintree, 2004

Erosion

Cherie Winner, Carolrhoda, 1999

Fossils

Ann O. Squire, Children's Press, 2002

Rocks

Alice K. Flanagan, Compass Point, 2001

Volcanoes and Earthquakes

Susanna Van Rose, DK, 2004

Colossal-Fossil-Site

http://www.colossal-fossil-site.com/

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/