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CATHERINE DRENNAN:
The first thing

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I do when I'm getting
ready for the class is

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to go over the handouts and
make sure they're really

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what I want, update
them, and go over that.

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Then I usually have-- sort
of back to my theater days,

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I guess-- a plan
for the lecture.

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When the clicker
questions are going to be,

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what I'm showing on PowerPoint
presentation, what I'm going

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to be writing on the board.

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And so I have it all organized.

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There is times when I want
to ask them a question

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and how I'm going to do that.

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If we're going to have a demo
in that particular class,

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where it's going to fit in,
how it's going to be set up.

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And I like to bring-- I love
three dimensional things.

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So if we're talking about
bonding, I want giant atoms

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and I'm always trying
to think of things

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that I can bring in
to use to show someone

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some kind of concept.

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And so I want, at
least once a week,

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to have some kind of
demo in the class.

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It's nice.

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I also like some geeky science
music and other things.

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And then, in the last
year where I taught,

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I upped the bar for myself.

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So if people are watching the
most current OpenCourseWare,

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they will see my
t-shirt collection.

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So I decided that in
addition to thinking

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about the demos and
the songs and what

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I'm writing on
the board and when

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I'm going to ask questions
and all of these things,

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that I needed to coordinate
it with my wardrobe.

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So that was a high bar
that I set for myself.

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And that somehow the
t-shirt not only had

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to be some kind of
geeky chemistry thing

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but related, somehow,
to the topic at hand.

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So that was one of-- that
took a lot of preparation.

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I had to plan.

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So if I had to order t-shirts,
I had to order ahead of time

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so they arrived.

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And figuring out a different
t-shirt per lecture,

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that was one of the
harder challenges.