Via Online Universities
From the website
"Gone is the time when PowerPoint was the most impressive communication technology in the lecture hall. These days, students and professors enjoy the power of Twitter, a tool that allows for digital discussions to supplement and even guide lecture sessions. So how exactly is Twitter changing the college lecture as we know it? Read on to find out about 10 different ways."
KF: The backchannel has become a popular feature of academic conferences over recent years. The basic structure of the backchannel is a behind the scenes discussion of the presentation by attendees and remote participants who are interested in a topic or speaker. The backchannel has a well-documented decade-long history and has become a core component of many conferences. The invention of the #hashtag (a form of metadata on live social media) means that conference participants can post and follow discussion points using social media like Twitter. Similarly, these tools can be utilised to provide a platform for learners in the traditional "delivery" context of lectures and large classes.
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Jim Lerman