How I Use It
I think these videos would be great to introduce concepts/units to students. Not only could you start the unit/class period with one of these videos/lessons, you could also assign students to watch them at home and answer the questions for homework, and start class with a discussion around the concepts learned. Students could also search for ideas for research projects by looking through videos. All of those I watched were very interesting.
I think there are tons of possibilities for use of this website as a teaching tool. I liked that you can create your own lessons, customize those you find, and use the ones you find as they are. I think the videos capture the attention of kids, and help make difficult concepts easier to understand.