National Center for Case Study Teaching in Science
http://ublib.buffalo.edu/libraries/projects/cases/case.html
Virginia Tech Case Study Site
http://www.edtech.vt.edu/edtech/id/models/casebased.html
Harvard University Case Site for Business
http://www.hbs.edu/case/index.html
Penn State University Case Site
http://tlt.its.psu.edu/suggestions/cases/
Happy Accidents (PDF)
http://www1.indstate.edu/cirt/facdev/pedagogies/happy_accidents.pdf
Institute for Case Development
http://www.wested.org/icd/welcome.html
Illinois Mathematics and Science Academy Center for Problem Based Learning
http://www2.imsa.edu/programs/pbl/cpbl.html
Maricopa Center for Teaching and Learning
http://www.mcli.dist.maricopa.edu/pbl/
Samford University
http://www.samford.edu/pbl/
Problem Based Learning at McMaster University
http://chemeng.mcmaster.ca/pbl/pbl.htm
Problem Based Learning Initiative
http://www.pbli.org/
Process Oriented Guided Inquiry Learning (POGIL)
http://www.pogil.org/
University of Delaware
http://www.udel.edu/pbl/
Teaching and Learning Styles
Teaching Patterns
Classroom Sociology
Lesson Design