You likely know what a podcast is, but do you know what a screencast is? How about a sketchcast? I’ve been using screencasts as tutorials and marketing elements for quite some time now. A screencast is essentially a video of what a user sees on his or her computer monitor, complete with mouse trails, text boxes, voice over and other unique features. If you’ve ever seen Atomic Learning demos, then you may know what a screencast is, as most of those tutorials are screencasts.
If you are going to really get into screencasting, then I’d recommend Adobe Captivate. If you’re not ready to mortgage your home to afford that software, then you may want to go Open Source with Wink or Web 2.0 with Screencast-O-matic. Some people also may be familiar with Snag-it, which has a remedial screencast function integrated into it.
Finally, I’ve been fooling around with a new website called Sketchcast that allows users to create simple Flash animations of sketches that you do with your computer. You can also add voice overs. The functions are pretty minimal, but that may be a benefit for many users. Think of working through a math problem and explaining it through your computer’s microphone, then posting it for all of your students to see!