Some subscribers to TeamLearning-L, might be 
interested in post "Re: Confessions of a Public 
Speaker - ADDENDA" [Hake (2010b)].  The abstract 
reads as follows:

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ABSTRACT: In a previous post [Hake (2010a)] I 
pointed to Scott Berkun's (2009) excellent 
"Confessions of a Public Speaker." Later I became 
aware of three other valuable papers on public 
speaking and writing: (a) "Giving an Academic 
Talk'" by Berkeley computer scientist Jonathan 
Shewchuk (undated),  (b) "How to talk 
Mathematics" [Halmos (1974)], and (c) "How to 
write Mathematics" [Halmos (1970)]. The latter 
two are by the late mathematician and expositor 
Paul Halmos 
<http://en.wikipedia.org/wiki/Paul_Halmos>.
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To access the complete 10 kB post. please click on <http://tinyurl.com/yat23vy>

Richard Hake, Emeritus Professor of Physics, Indiana University
24245 Hatteras Street, Woodland Hills, CA 91367
Honorary Member, Curmudgeon Lodge of Deventer, The Netherlands.
<[log in to unmask]>
<http://www.physics.indiana.edu/~hake/>
<http://www.physics.indiana.edu/~sdi/>
<http://HakesEdStuff.blogspot.com/>
<http://iub.academia.edu/RichardHake>

REFERENCES [Tiny URL's courtesy <http://tinyurl.com/create.php>.]

Berkun, S. 2009. "Confessions of a Public 
Speaker." O'Reilly Media, publisher's 
information, including the table of contents and 
a short video are at 
<http://oreilly.com/catalog/9780596802004>. Note 
the "Browse Contents" feature. Amazon.com 
information at <http://tinyurl.com/y9z37ag>. Note 
the searchable "Look Inside" feature.  For two 
free chapters from the book see
<http://www.scottberkun.com/blog/2010/free-chapters-from-confessions>.

Hake, R.R. 2010a. "Re: Confessions of a Public 
Speaker," online on the OPEN! AERA-L archives at 
<http://tinyurl.com/yh3hujm>. Post of 25 Feb 2010 
08:29:05-0800 to AERA-L, Phys-L, PhysLrnR, and 
Net-Gold.  In addition, the abstract and URL for 
the complete post was transmitted to various 
discussion lists. The abstract is also online at
<http://hakesedstuff.blogspot.com/2010/02/re-confessions-of-public-speaker.html> 
with a provision for comments.

Hake, R.R. 2010b. "Re: Confessions of a Public 
Speaker - ADDENDA," online on the OPEN! AERA-L 
archives at <http://tinyurl.com/yat23vy>. Post of 
27 Feb 2010 11:00:27-0800 to AERA-L, Net-Gold, 
and PhysLrnR. The abstract is also being 
transmitted to various discussion lists and is 
online at
<http://hakesedstuff.blogspot.com/2010/02/re-confessions-of-public-speaker_27.html> 
with a provision for comments.

Halmos, P.R. 1970. "How to write Mathematics," 
L'Enseignement Mathématique 16; online as a 3.4 
MB pdf at  <http://tinyurl.com/ydmfnov>.

Halmos, P.R. 1974. "How to talk Mathematics, 
"Notices of AMS 21: 155-158; online at 
<http://www.math.northwestern.edu/graduate/Forum/HALMOS.html>. 
Summary: "My recommendations amount to this: make 
it simple, organized and short. Make your lecture 
simple (special and concrete); be sure to prove 
something and ask something; prepare, in detail; 
organize the content and adjust to the level of 
the audience; keep it short, and, to be sure of 
doing so, prepare it so as to make it flexible. 
Remember that you are talking in order to attract 
the listeners to your subject and to inform them 
about it; and remember that less is more."

Shewchuk,J. undated. "Giving an Academic Talk," 
online at 
<http://www.cs.berkeley.edu/~jrs/speaking.html>. 
Summary: ". . . .minimize words and maximize 
pictures. Your slides are not there to remind you 
what to say. Bullet points make your audience 
feel your talk is in bullet time."