"Sue, I've had to delete your emails because someone has been spoofing them for the past year. Can you email me with a subject 'friend' or such. I'd like to be in contact again. The other person keeps using your name and hijacking…"
With your work in Education Technology, I recommend you take a look at Wiziq's virtual classroom and authorstream's power point presentation platform. Both are web based platforms, have a bunch of features and free basic service. Here’s a public class recording you might find of interest.