EdCamp is a grassroots movement of do-it-yourself professional development "un-conferences" that originated in Philadelphia in November 2010. In just a little over a year and a half the phenomenon has gained serious momentum across the country and now around the globe. This teacher-driven, bottom-up approach to professional development…

Few computing devices have sparked the burning gizmo lust ignited by the iPad. Apple's latest entry into the tablet PC market didn't generate much heat when it was first unveiled in January, but by April 3, the day of the official release, feverish customers were mobbing Apple stores. The company claims to have sold 300,000 iPads by midnight on…