Open Thinking Wiki: Technology & Justice
http://couros.wikispaces.com/socialjustice

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Laura Richter's "There Ought to Be a Law" Notebook
http://www.thereought2bealaw.com/lessons/otbl/index.html

Facing History and Ourselves
http://www.facinghistory.org/

Teaching Tolerance
http://www.tolerance.org/

Teaching for Change
http://teachingforchange.org/

EdChange
http://www.edchange.org/index.html

Radical Math
http://www.radicalmath.org/

Oxfam
http://www.oxfam.org.uk/education/