60-second Science: What an educational screencast should look like

If you have not yet subscribed to the "60-second Science" video-cast... do so now. These are great examples of how teachers can effectively use video for instruction.

I have not tried this kind of video presentation... yet. However, applications like iShowU, SnapzProX, or ScreenFlow are your likely software co-conspirators to get a project completed.

What's particularly appealing is way they integrate the Mac OS, various applications, and the iSight video of themselves speaking. The computer suddenly becomes a complete, and seamless, teaching tool. Great stuff!