With the IBM / Blackboard partnership, it would be great to leverage some of the speech-to-text and text-to-speech capabilities they have. One of the ways this may be useful is in providing feedback to students on their contributions. This would speed up marking dramatically, being that you can talk faster than you can write (for a lot of people anyway), and you can make your feedback more conversational without worrying that after a night of marking you are sounding either tired or frustrated or both.
It would be a great way to make the task of online feedback a little smoother.
If you add the ability to include video/audio, it might also be useful to use sppech to text to transcribe the comments for those who may have difficulty understanding the spoken tongue.
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