It's been over a year since I've posted to this blog, mostly because I've been busy being department chair. As I type this, I've got 313 days left on my term. So the end is almost in sight. I posted a page with code for computing the spanning trees of a graph a while ago on http://faculty.uml.edu/klevasseur/ads2/sage_cell/sage_cell.html but I'm not sure how much use it's had.
Here is a video that shows how to use this resource:
A comment from who finds this resource useful will make it more likely that I will find the time to add more!