Disclaimer
# Paul Zorn

President,
Mathematical Association of America

Department of Mathematics, Statistics, and Computer Science

St. Olaf College

1520 St. Olaf Avenue

Northfield, Minnesota 55057-1098

Phone: 507-786-3414

Fax: 507-786-3116

Email: zorn@stolaf.edu

Office: Regents Hall of Mathematical Sciences 508

### MAA-related math talks

Here are titles and abstracts of talks I've given, mainly at MAA-related events.
PDF---and hence static rather than dynamic---versions of the talk slides are available
by clicking.
**
Revisiting Familiar Places: What I Learned at the Magazine
**

** Abstract:**
Among the perks of editing Mathematics Magazine, as I did from 1995 to
2000, was the chance to see and learn an enormous variety of mathematics.
Much of it was familiar, but a surprising amount was new, or different.
Can there possibly be anything new to learn about cubic polynomials?
Countable sets? Equilateral triangles? Bijective functions?
The short answer is yes, and I'll give some examples that worked for me.
The Magazine and other MAA journals are rich sources of
novel --- and often surprising --- views of supposedly familiar
and thoroughly understood topics from undergraduate
mathematics. That such examples exist testifies to the depth
and richness of our subject, including at the undergraduate level.
PDF version

**
Picturing Analysis
**

** Abstract:**
"Thinking in pictures" is standard operating procedure
in teaching and learning geometry, graph theory, elementary calculus,
and other visually rich areas of mathematics. Less obvious,
but no less valuable, are visual insights into
key ideas and theorems from real and complex analysis.
It's one thing to know what, say, differentiability and integrability
mean, but how do they look? How do poles and essential
singularities of complex functions look in color?
Can countability be seen? I'll give examples and suggest
implications for better teaching, learning, and understanding.

**
Extreme Calculus
**

** Abstract:**
There is more to elementary calculus than may first meet the eye,
especially to those of us who teach it again and again. Well-worn
calculus techniques and topics---polynomials, optimization, root-finding,
methods of integration, and more---often point to deeper, more general,
more interesting, and sometimes surprising mathematical ideas and
techniques. I'll illustrate my thesis with figures, examples, and
calculation, and give references to MAA publications and resources that
can support taking elementary calculus to its extremes.