I have been working in schools that have e-mail for nearly fifteen years. E-mail makes it easier for me to teach. I would rather help a student get "unstuck," even during my evenings and weekends, than wait for them to come to school frustrated. I wish students would e-mail me more! Writing an e-mail to a teacher means you have to know how to ask the question so you will get an answer that is helpful. Being able to ask a question in a manner that will furnish the answer you need, is a hallmark of an educated person--and a good communicator.
Sometimes explaining concepts in an e-mail exchange can be tough. I had a highly motivated student who corresponded with me a couple of times this past Saturday. She was analyzing her data for an independent science project. Because she is determining the relationship between atmospheric pressure and snow density, she needed to learn to do a scatter plot in Excel. We had discussed this in person, but when she got home it wasn't clear.
Screenjelly made it possible for me to help her-- on a Saturday evening when we were miles apart. I recorded this little movie in a moment or two. It won't win any academy awards, but it did help my student to get "unstuck." I have also used Screenjelly to record a movie for parents so they can see how they can navigate to information that is on my class website.
Anytime, anywhere learning, makes it possible to be an anytime, anywhere teacher too.