Diigo Ed Picks - Dec 23, 2011

http://www.dustball.com/cs/plagiarism.checker/ - plagiarism checker (probably a rerun...)

http://www.teacherled.com/resources/difftri/fifteenload.html - difference triangle puzzle - not trivial...
http://www.ion.uillinois.edu/index.asp - Illinois Online Network - more and more are doing it...
http://www.commoncraft.com/ - source of the "xxx in Plain English" videos - simple well-made training videos

More:
http://groups.diigo.com/group/diigoineducation
http://groups.diigo.com/group/ed-tech-crew
Archive: mrhenryslz.blogspot.com