This semester, I am posting my lecture slides for my Econometrics class on GitHub. While I usually post my lecture slides for my courses on my website or link to my Dropbox, those are the final PDF documents. On GitHub, I am posting both the final PDFs as well as the source .rmd files. I am primarily doing this for my econometrics students, who will be learning R and R Markdown for their assignments (which is how I write my slides), but this is also open to anyone.
With the new school year in full swing, I have redesigned my personal website, and plan to make occasional posts on the tools I use in my research and teaching. Over the summer, I made the full conversion to using R, R Markdown, and Github for nearly everything I do in my professional life (including managing my website with Hugo/Academic).
This semester, I am teaching econometrics to my students using R for the first time, and optionally nudging them to use R Markdown for their homeworks and paper assignment.