These past couple of weeks I've been busy developing content for a new masters-level data analytics course I'll be teaching in the fall. One of the big challenges has been finding compelling, manageable, and well documented data sets for the students to investigate. This is probably a challenge in the most general circumstances, but aiming content at Babson students makes management, economics, sustainability, marketing, and similar data sets really valuable. I've found a bunch I like on Kaggle, a site that runs data analytics competitions. Even if a competition is closed, you can submit your predictions and see how your model would've stacked up. Could make for a fun open-ended midterm or final.
Doing and teaching mathematics.