1. Conflict in the Classroom: Controversy And Learning
2. Structured Academic Controversy: A Peaceful Approach to Controversial Issues
3. Keys to teaching the nature of science;McComas W.F.;The Science Teacher,2004
4. National Environmental Education Foundation. 2015. Environmental literacy in the United States: An agenda for leadership in the 21st century. Washington, DC: National Environmental Education Foundation.
5. NGSS Lead States. 2013. Next Generation Science Standards: For states, by states. Washington, DC: National Academies Press. www.nextgenscience.org/next-generation-science-standards