Many people use Twitter as a backchannel, but there are some people (like me) who would prefer a different solution - because, otherwise, audience members must obtain Twitter accounts participate, which they may not want to do, and the conversation may be more public (i.e., broadcast to the entire universe) than some people might like. Also, it's really annoying to read one half of a conversation through an individual's tweets (whch is what hashtags address, of course, provided people use them correctly, or consistently, and... sigh.) anyhow, here are five alternatives for a classroom back-channel (and I know, I know, you love twitter and thing everyone should - but you'll have to get past that and realize that the world has more than one religion).
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