Proto-Indo-European Grammar

This brief overview of PIE grammar is intended for students in an introductory History of the English language course who may need refreshing on grammatical terminology at the same time.  Some errors appear in the declensions of Lithuanian words: I owe thanks to native speakers in the comments, and I also owe thanks to native Spanish speakers who have identified a couple of mistakes in my use of those words.  When I release a revised version of this video, I will incorporate those corrections.  Showing a due respect for other languages and their speakers is a basic responsibility for anyone speaking on this topic, as is resisting the idea that any daughter language of PIE is somehow the "true" representative of the family.  I say this not to undermine the traditional self-understanding of any of the peoples who use Indo-European languages, but to stick the linguistic facts that all languages change and must change, and to avoid the errors that were used to support the most dangerous nationalist ideologies of the last century.  
To learn, we must both speak and listen, and then speak and listen again, so I am grateful that people have chosen to speak in the comments on this rather modest video.