**Lecture Notes **

· "Andean Architecture: The Power of the Trapezoid" A photo essay

· "Let M be Mary:
variables from grade 3 to grade 13" PIMS Changing the Culture 2008:
Mathematics: Beauty and Utility,

· "The Math
Forum" Secondary Teacher Preparation Conference, March 2008,

· "Mathematics as Language: Fact or Metaphor" Short Course Cemala Summer School June, 2007,UIC

· "Mathematics as Language: Fact or Metaphor: II" Short Course Cemala Summer School June, 2007,UIC

· "Geometry and Proof" Breakout, Symposium on Excellence in Teaching and Learning of Math and Science May, 2007 updates the next entry with additional references

· " How many meanings are there for the minus sign?" Some alternatives

· " Foil and Pemdas" Some of the many cases where they don't work

· " Unifying the two definitions of pi " ; reporting others modernizing Archimedes

· Geometry
and Proof Short paper for the Tools in Teaching Logic Conference;

· Variables:
Syntax, Semantics, and Situations (preprint)

The paper “Pis not Pizza: Variables from grade 3 to 13” with Alexander Radosavljevic and Hyung Sook Lee, which was presented at the International Consortium for Research in Science and Mathematics Education (ICRSME XII) Quito, Ecuador May 13-16, 2008 is no longer available on-line due to publisher restrictions.

Here is the pdf of the tex verson P is not pizza

A version, edited, revised, and translated into word will be available as a chapter in the book: Promising Practices to Meet Global Challenges in Science and Mathematics Education. This book will be indexed in the Education Resources Information

Center (ERIC) after publication. Information related to obtaining this book will perhaps be posted someday at

__· The Math Forum-for Proceedings of
Conference on Secondary Teacher Professional Development: Tucson, March 2008
__

__· What is a minus sign anyway
[postscript]__ notes on formalism behind grade school
math-- very preliminary.

· The UIC Algebra Symposium [html] (with Cathy Kessel) MER newsletter Winter 2006.

· Concept and Computation: the role of curriculum [html] (with Cathy Kessel) MER newsletter 2000.

· Concept and Computation, the teacher's role [html] MER newsletter 1999; a review of Liping Ma's book

· Russell's Paradox, [html] (with Olivier Lessmann, 1998 for Scientific American faq)

· An American Example of High School-University Cooperation, [html version] (with Roberta Dees) (Proceedings of Conference in Kobe Japan, March 1994)

· Encouraging cooperative solution of mathematics problems, [html version] (with Roberta Dees, David Foulser, David Tartakoff) (Primus,III (1993), 198-206)

· Summer Institute at UIC, [html version] Summac Forum, 2 (1994)

· Three Mathematical Cultures [html version] in Changing the Culture: Mathematics Education in the Research Community, edited by Fisher et al, American Mathematical Society, (1995), 17-31

Postscript files and Latex source files can be obtained by anonymous ftp. (login
name "anonymous" or "ftp"; password can be anything) from
ftp://www.math.uic.edu/pub/preprints/baldwin/. You will need to uncompress some
of older postscript files with the command pkunzip or gunzip. The name of the
archived file is appended below.

· Russell's Paradox, [postscript] (with Olivier Lessmann)

· An American Example of High School-University Cooperation (with Roberta Dees)[k.ps.gz] (Proceedings of Conference in Kobe Japan, March 1994)

· Encouraging cooperative solution of mathematics problems (with Roberta Dees, David Foulser, David Tartakoff)[ecs.ps.gz] (Primus,III (1993), 198-206)

· Summer Institute at UIC,[summa.ps.gz] Summac Forum, 2 (1994)

· Three Mathematical
Cultures [3c.ps.gz] in Changing the Culture: Mathematics Education in the
Research Community, edited by Fisher et al, American Mathematical Society,
(1995), 17-31

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