2009 IEEE international conference on advanced learning technologies : (ICALT 2009) : Riga, Latvia : 15-17 July 2009. : 2009 9th IEEE international conference on advanced learning technologies : 1st European workshop on ICOPER best practice : 4th international M3C workshop on interaction with content around curriculum lifecycle : 1st international workshop on visual instructional design languages and applications in technology enhanced learning (VIDLATEL) : ICALT2009 : Jul 2009, Riga, Latvia.