Hi Elizabeth - thanks for writing! It's great to hear from you. To how many students are you teaching Bootstrap this year? Google Images has changed a lot
since your PD, which makes it harder to get the URL of the image. We're switching over to DuckDuckGo.com this year, which has an image search that makes it a lot easier to find images that work. Hope this helps!
Oh, and for future questions, I recommend posting on our new Discourse Community
, which is a significant upgrade from this google group.