References
- Douglas, R., M. Klentschy, K. Worth, and W. Binder. 2006. Linking science and literacy in the K-8 classroom. Arlington, VA: NSTA Press.
- Frosty the snowman. 2001. New York: Golden Book Publishing Company.
- NASA. "States of matter" Web page. http://www.grc.nasa.gov/WWW/K-2/airplane/state.html
- National Research Council. 1996. National science education standards. Washington, DC: National Academy Press.