Here is a link to a blog post I wrote over at Teaching Tolerance:
This story happened two years ago, and it still makes me smile. I've kept the poster with all of the summaries and the pictures that students made. Definitely one of the best lessons that I've learned!
On a related note: We haven't seen many woolly bear caterpillars this year. Lots of buckeyes, but no woolly bears? Has anyone else noticed this?