This is a very interesting discussion, particularly the point made about people, teachers in particular, not wanting to feel "foolish."
I think lots of people feel insecure about writing what they think, unless they're forced to do so on an essay exam.
I wonder, too, if students of all ages, are concerned about privacy. For example, are they thinking: "If I post an opinion that is counter to the "status quo" of my class, my school, my political party, (gasp) my parents, who else will be able to read it? Can people find out what I say in this discussion group and then use the information against me?"
It's a sad state of affairs, but I think most people are afraid to express themselves these days; whether they have a question or an opinion. Have you noticed how hardly anyone uses bumper stickers anymore? Have you noticed how, in a classroom, students often seem reluctant to ask the first question?
Someone posted something about the "right" way to express oneself in a discussion group. I think there is no right way, per se. I think you just ask people not to swear or sneer, not to use capital letters which implies shouting, and to have respect for one another. You know, the Golden Rule, it works on the street, why not on line?
I've always found that I am very quick to post to a community whenever someone has expressed an opinion strongly counter to my own. Then, I like to add my own opinion.
One of the most lively discussions I participated in was one which was polling for opinions about Pepsi and Coca-Cola tv commercials. Asking a fairly innocuous question about something that almost everyone is familiar with, might be a good way to encourage online discussion. That is, start with something fun and small, get to know one another, then go on to the "larger" questions of coursework.
Just thinking out loud.
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