I can't find the proper way to attribute this, which is a shame because it's brilliant, so I'll put it here, rather than on my website. This slide show (which is all about using Twitter for teaching) is held under creative commons and there are various page authors given. They deserve a round of applause for their great work. Just in case it needs saying, I am not responsible for any of this. The page authors are listed by their Tweet names on their relevant page.
Go to: https://docs.google.com/present/view?id=dhn2vcv5_118cfb8msf8