00450nas a2200133   4500000000100000000000100001008004100002260011400043100002200157700001500179700002000194700001800214245008400232       2014                            d  bWelten Institute – Research Centre for Learning, Teaching and Technology Open University of the Netherlands1 aBernardo Tabuenca1 aMarco Kalz1 aStefaan Ternier1 aMarcus Specht00aMobile authoring of open educational resources for authentic learning scenarios