As a follow-up to my video Introduction to Ratios, I've produced a second on simplifying ratios and rates. This video uses the new template for the algebra videos out of MCTC. Justin Dean worked hard to adjust my original PowerPoint to the new template. I think the result is clean and readable.
The additional narration is by Cari Hillyard, who is our math lab assistant. She has been a big help to us on campus.