Making a video of an interaction on a computer screen, or screencasting, has been extremely useful in my work with distance-learning ESOL students. Since we only meet for orientation and testing, it’s great to be able to point students to a video showing how to use the course website, or how to use a supplemental website I give them for their particular language needs. I also use it to explain corrections when a typed explanation is too laborious to type or to read. Having a visual and auditory explanation can be easier to follow than a handout for some people. And they can always go back to listen to it again.
To see some examples, you can visit my class site: http://dianaesl.weebly.com/index.html To see course how-to videos, click USALearns, SkillsTutor, or LiveMocha. To see how-tos for other sites, click Extra practice and look for resources that refer to video instructions.
Have you tried using screencasts to explain how to do something for your students? Share your links with us in the comments!