1. The sites I find most helpful are teacher tube, discovery education, you tube, and pbs.
2. This video is from pbs. I actually used pbs today in my class to teach them more about the dust bowl of the 30's after reading a Bluebonnet nomination Barn Stormer. Here is a video about habitats and environments of whales.
I found another really good one for science- Kilauea, on Hawaii's Big Island, is the world's most active volcano. I am trying to embed it, we shall see if it works. If not, it was under the topic Exploring Science. Volcano videos are great for teaching land formations, constructions and destruction of land, along with the rock cycle. I am very excited about watching this video with my students. I know they will love it!
if you right click on the word Introduction it will take you to the website. Not sure why html code isn't working
3. I don't know that I learned that much about copyright and such because I didn't run into any issues of copyright with the videos I embedded.
4. I can see using the drop box in order to post copies of instructions in case students lose their hard copy they could go to the drop box and get another copy. Also it would be a good way to archive news notes for parents to access. I downloaded public stalagtite and stalagmite pictures from picasa. It is a great way show the class pictures on a topic, but also you could save pictures there for the students to use in projects or to use to analyze and apply concepts.