ScreenCastify is a free extension that is used with Chrome. It allows you to record any content that can be see in a Chrome browser, use a voice over and annotate it.
Audience: All
Level of Complexity: Easy
Technology Needed: Chrome Browser and extension installed
Who has used it and can help you: Ann Mariano
Here are some samples: From Screencastify's website & Example of screencasting with a video showing how to edit the school website.