

Why I Don't Use PowerPoint For Teaching - neilc
http://okasaki.blogspot.com/2008/01/why-i-dont-use-powerpoint-for-teaching.html

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xirium
From the article "One person (the presenter) is presenting information to
other people (the audience). The flow of information is one way, from the
presenter to the audience. Because the flow of information is one way, the
presenter can and does script out the entire presentation ahead of time, much
like a movie or a novel. Like those forms, a PowerPoint presentation is highly
linear. It is meant to be experienced in a particular order. Deviating from
the expected order is possible, but awkward."

It takes way too much effort to create a linear presentation for a class,
especially while pre-requisites are missing.

I've had this situation while teaching mathematics. Two people in the class
didn't understand negative numbers. When you're using a pen and a whiteboard,
you have the freedom to draw a number line, spend one minute explaining
negative numbers and then continue.

