1. Adams, J. (1992).Insect potpourri: Adventures in entomology. Gainesville, FL: Sandhill Crane.
2. Barrow, L., Kim, Y., & Brent, B. (2002). Determining preservice students understanding about electricity with K-W-L.CESI, 35(1), 10–12.
3. Borror, D., Triplehorn, C., & Johnson, N. (1989).Study of insects (6th ed.). Philadelphia: Saunders College Publishing.
4. Braund, M. (1998). Trends in children’s concepts of vertebrates and invertebrates.Journal of Biological Education, 32, 112–118.
5. Carey, S. (1985).Conceptual change in childhood. Cambridge: MIT Press.