I've never, in my life, been more jealous of someone else's genius...
Here is their YouTube page... definitely check out more of their videos. I am beyond amazed by this project and these teachers. Scroll through their uploads (52 of them), at the top right hand corner of their YouTube page, by clicking See All.
I was up until 3 AM bearing witness to their awesomeness.
This just added a whole new layer of cool to the homeschooling curriculum.