At the CSCTFL Conference in March, I promised a room full of teachers that I would make a video about how to use screencasts in class. It only took 6 months, but here it is.
A screencast is a video of everything that happens on your computer screen with the audio of your voice narrating. I have found them very useful for various applications in and out of class. The following link should direct you to a video that explains how I make them and how I use them.