Why is it that it's not until you're right in the middle of a class discussion, one where lots of people are actively engaged, asking good questions and raising important issues, and where you know that you are working against the clock to get all the contributions in, that you discover ...
... that the white board, where you have been tracking key points in the discussion (and which you need to erase to collect the new points that people are raising now), will no longer release the dry erase marker with a dry cloth?
And, at that point, in the absence of a water bottle, what alternative is…
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