One of my contributions to the Dutch national conference on Virtual Worlds http://fontys.nl/Over-Fontys/Fontys-Lerarenopleiding-Tilburg/Professionaliseren/Studiedagen/Nationale-conferentie-Virtuele-Werelden-in-het-onderwijs-op-13-november.htm on behalf of the CAMELOT project. http://camelotproject.eu/