 Welcome to this unit which discusses the principles of phonetics in general and the articulatory properties of human speech in particular. We will look at the branches of phonetics and will discuss the central aspects of speech anatomy with special emphasis on articulation. You can use the question set in the how to proceed section as default guidance but you can also go through all content units on your own. Some elements are extremely interactive so make sure you make use of these options. The mastery test presents several randomly chosen questions about phonetics. After having dealt with the content units you should not find them difficult at all. And our suggestions for the in-class activities are all about speech sound articulation. This might be a bit difficult but if you apply your knowledge about the articulators you should manage. Oh by the way don't forget to document your learning progress by ticking off an activity once you have mastered it. So all in all a challenging unit but if you invest a reasonable amount of time you will be fine.