1. Representations of nature of science in high school chemistry textbooks over the past four decades;Abd-El-Khalick;Journal of Research in Science Teaching,2008
2. American Association for the Advancement of Science. (2005). High school biology textbooks: A benchmarks-based evaluation. Retrieved February 2, 2007, from http://www.project2061.org/publications/textbook/hsbio/report/browse.htm.
3. Reform by the book: What is-or might be-the role of curriculum materials in teacher learning and instructional reform?;Ball;Educational Researcher,1996