Compadre: www.compadre.org

Mazur's website on education: mazur-www.harvard.edu

PhysEd at University of Minnesota: www.physics.umn.edu

Institute for transforming undergraduate Education: www.udel.edu

PHS Resource Center: psrc.aapt.org

UMD Lecture demonstrations: www.physics.umd.edu

UMD Physics Education Research group: www.physics.umd.edu