1. Benchmarks for Science Literacy;American Association for the Advancement of Science,1993
2. How People Learn: Brain, Mind, Experience, and School;Bransford,2000
3. Crane
R.
Jackson
C.B.
Sedlacek
R.
Walker
D.
(2006). EPA approves new test procedures for the analysis of microbiological pollutants in wastewater and sludge. Loveland, CO: Hach Company. Available online at http://www.hach.com/fmmimghach?/CODE%3AMCB24CRWAPUBLICATION12892%7C1.
4. Scientific accomplishments of the Long Term Ecological Research program: an introduction;Hobbie;BioScience,2003
5. Illinois State Board of Education. (1997). State goal 11. Illinois Learning Standards for Science. Available online athttp://www.isbe.state.il.us/ils/science/word/goal11.doc.