 Hello, in the following I'm going to introduce you to the teaching concept that we use on the Virtual Linguistics Campus. This teaching concept is highly effective and has been operational since 2004. We refer to it as the inverted classroom mastery model. And within this model, content delivery and content acquisition take place online using our VLC multimedia e-learning units. They have been created over a period of more than 10 years and have been supplemented by screencasts and e-lectures since 2012. Furthermore, all classes are supported by the VLC workbooks where students can study the plain texts in a non-hypertextual format. This combination of multimedia, video and print is unparalleled in the world of e-teaching and e-learning. And with the content available online, we have flipped the phases of traditional teaching. Phase 1 is now a self-guided content acquisition phase. The subsequent in class phase is dedicated to practicing and deepening. This simple inverted classroom model was first used by us in 2004 and has been used ever since. By means of formative assessment, which we added in 2009 to each e-learning unit, we managed to add a mastery component to our model. Prior to each in class meeting, the teacher can now construct a model of his student, that is mastery or not, and organize the in class meetings accordingly. And our students? Well, our students have permanent access to the content. They can examine the virtual sessions with no temporal or local limit. They can watch the e-lectures on their mobile devices. They can use the e-lecture board content and supplement their workbook with the missing information. And once they're ready and have mastered it all, they attend the subsequent in class meeting. The in class phase is now no longer any sort of frontal teaching or lecturing. Instead, the central teaching method is that of a cooperative interaction between instructor and student. Honestly, for us it doesn't make sense to teach in the traditional format anymore. Why should we repeat what's in an e-learning unit? So what we do in class instead is practicing, discussing problem, analysis of data. All those things that our students would have done on their own at home without any assistance in a traditional teaching scenario. By the way, mere online classes are byproducts of our concept. We simply abandon the in class meetings in favor of more elaborate practical materials with model solutions taken from our exercise databases. And thus the generation of a MOOC, a massive open online course, which is considered a revolution in e-teaching is absolutely trivial on the virtual linguistics campus. It is our inverted classroom mastery model without in class meetings but with additional practical material. But the prerequisite for all this is elaborate content, content, content. Something that has been neglected for far too long in many e-teaching scenarios. Thank you very much.