Action Research 21
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Barnet, M., Chavez, D., Deni, L., et. al. (2006) Using the urban environment to engage youths in urban ecology field studies. (2) 3-11.
Bednarz, Sarah W. (2000). Connecting GIS and problem based learning: GIS in Schools. Redlands, CA: ESRI Press.
Blumenfield, P.C. Krajcik, J.S., & Tal, T. (2006) Urban schools’ teachers enacting project based science. (7) 722-745.
Bransford, J.D., & Donovan, M.S. (Eds.). (2005). How students learn science in the classroom. Washington, DC: National Academies Press.
California Department of Education. (2004). Science Framework for California Public Schools. Retrieved April 30, 2007, from