Contact The Mathematics Association of America

Contact Jim King

James King and Doris Schattschneider

**Susan Addington** is an associate professor of
mathematics at California
State University, San Bernardino. Her interests include geometry and algebra,
the use of computers for mathematical visualization and communication, and math
education. Addington is involved in enriching the mathematical education of
elementary and middle school students, teachers, and parents through several
projects, including The California Math Show, a traveling hands-on exhibit on
the idea of symmetry. To reach her, phone (909) 880 5362, fax (909) 880-7119,
email susan@math.csusb.edu,
or check her World Wide Web home page
http://www.math.csusb.edu/faculty/susan/home.html.

**Richard Allen** is professor of computer science and
mathematics at St.
Olaf College in Northfield, MN. One of his major professional interests
consists in the development of tutoring systems for learning geometry. At the
same time he has worked with teachers and two St. Olaf colleagues during the
past ten years in two National Science Foundation funded projects to bring
geometry microworlds and geometry tutors into the classroom. A recent
publication is "Constraint Based Automatic Construction and Manipulation of
Geometric Figures." His phone number is (507) 646 3117 and email address is
allen@stolaf.edu.

**Benjamin T. Backus** is a graduate student in the
Vision Science Program
at the University of California at Berkeley. He taught mathematics in middle
and high schools from 1989 to 1993 in Oakland, California. Together with his
advisor, Martin S. Banks, he has published work in binocular vision and the
determination of heading from optic flow. He can be contacted at the U.C.
School of Optometry, 360 Minor Hall, Berkeley, CA 94720-2020, email:
ben@john.berkeley.edu.
For those interested in teaching vision through dynamic
geometry, he recommends a visit to the web site
http://john.berkeley.edu/IndividualPages/MartyPages/OSP.html

**Dan Bennett** is a mathematics editor at Key
Curriculum Press, publishers
of *The Geometer's Sketchpad*. He is author of *Exploring Geometry with
The Geometer's Sketchpad* and *Pythagoras Plugged In: Proofs and Problems
for The Geometer's Sketchpad*. Before beginning work at Key, he was a high
school math teacher in San Francisco. He can be reached at Key Curriculum
Press,
P.O. Box 2304, Berkeley, CA 94702; e-mail:
dbennett@keypress.com

**Kathryn Boehm** currently teaches mathematics at
Harpeth Hall, a 5-12
independent school for girls in Nashville, TN. She has been teaching geometry
for 8 years and has constantly sought ways, such as the use of dynamic Geometry
software, to make the ancient subject come alive for
her students. She is a member of NCTM and resides at 916 Whiteheath Ct.,
Nashville, TN 37221. E-mail:
dboehm@bellsouth.net.

**Doug Brumbaugh** teaches teachers and believes if
he is telling others how
to do it, he should be out there doing it. This year he will be teaching two
geometry classes using *Geometer's Sketchpad* in a local school for
at-risk students. Doug recently completed a secondary mathematics methods
textbook, *Teaching Secondary Mathematics*, published by Lawrence Erlbaum
& Associates. Telephone: (407) 823 2045; email:
brumbad@pegasus.cc.ucf.edu;
web site:
http://pegasus.cc.ucf.edu/~mathed

**Jere Confrey** is an associate professor of
mathematics education at
Cornell University. Her research has focused on articulating the potential in
mathematical ideas of students. History has been an important tool in
establishing these alternative approaches. Her recent work with
elementary students has focused on the construct of "splitting", establishing
it as an independent but complementary idea to "counting." Currently she is
co-authoring a multimedia precalculus course incorporating investigations and
computer-based software tools. She is a senior editor for *Computers and
Mathematics Learning* in which she co-authored the paper, "A Critique of the
Selection of 'Mathematical Objects' as a Central Metaphor for Advanced
Mathematical Thinking." Her phone number is (607) 255 1255 and e-mail is
jc56@cornell.edu.

**Al Cuoco** is Senior Scientist and Director of the
Mathematics Initiative
at Education Development Center, 55 Chapel Street, Newton MA 02158
(alcuoco@edc.org)
where he is working on a high school geometry curriculum,
Connected Geometry, that makes central use of dynamic visualization. From
1969 until 1993, he taught high school mathematics. His mathematical
interests and publications have been in algebraic number theory, but he has
slowly learned to appreciate the role of geometry and visualization. His
favorite publication in this area is his article in the *American
Mathematical Monthly *(98, 4), described by his wife as "an attempt to
explain a number system no one understands with a picture no one can see."

**Michael D. de Villiers** is associate professor of
mathematics education
at the University of Durban-Westville, South Africa. His major research areas
are geometry, the nature and philosophy of mathematics, and applications of
school mathematics. Two recent publications are "An alternative introduction to
proof in dynamic geometry", *MicroMath*, Spring 1995, 14-19 and *Some
adventures in Euclidean geometry* (212 pp), 1996, University of
Durban-Westville. Since 1988 he has been editor of *Pythagoras,* the
journal of the Mathematical Association for Mathematics
Education of South Africa (AMESA). His fax number is 027-31-8202866 and e-mail
is mdevilli@pixie.udw.ac.za.

**David Dennis** is a professor of mathematics at the
University of Texas at
El Paso. His research focuses on the history of mathematics and mathematics
education. Recently he conducted an extended study of the history of
curve-drawing devices and their role in the genesis of calculus. He is
currently involved in the Partnership for Excellence in Teacher Education
(PETE), an NSF pre-service teacher collaborative to improve the mathematical
and scientific preparation of K-12 teachers. Contact: Dept. of Mathematical
Sciences, University of Texas at El Paso, El Paso, TX 79968-0514; Tel: (915)
747 6775, Fax: (915) 747 6502, e-mail:
dennis@math.utep.edu

**Tim Garry** has been teaching secondary
mathematics in international
schools in Scotland, Switzerland and Norway for the past eight years. In Fall
1996 he began teaching at the University School of Milwaukee, 2100 W. Fairy
Chasm Rd., Milwaukee, WI 53217 (fax: (414) 352 8076). His major interests are
integrating graphing calculators and geometry software into the math classroom
and sharing ideas with teachers at workshops. For the past two years he has
been a member of the European Council of International Schools' (ECIS)
Mathematics Committee and editor of *The Centroid*, the ECIS mathematics
newsletter. His e-mail address is:
100114.2524@compuserve.com

**E. Paul Goldenberg**, Senior Scientist at Education
Development Center,
Inc. (EDC), received his doctorate from the Harvard Graduate School of
Education. Author of numerous books and articles on mathematics learning and
uses of computers in education, his background includes mathematics
coordination for the University of Chicago Laboratory Schools, and extensive
teaching in primary, secondary, and graduate school. At EDC, Dr. Goldenberg has
been principal
investigator of Connected Geometry, a secondary mathematics curriculum project,
as well as for a research effort "The Epistemology of Dynamic Geometry," both
funded by the NSF. He is also engaged in other research and development
efforts in undergraduate mathematics learning.
pgoldenberg@edc.org

**Catherine A. Gorini** teaches mathematics at
Maharishi University of
Management. Her main interest is in investigating the connections between
Maharishi's Vedic Science and mathematics and applying the principles of the
development of consciousness to mathematics education. One aspect of her work
in this area is in teaching mathematics visually---using art, computer
graphics, and models---as a way of appealing to the whole student. Her
publications include "An Art Research Project for a Geometry Course'' in
PRIMUS, December,1994, and "Symmetry: A Link Between Mathematics and Life" in
the *Humanistic Mathematics Network Journal*, Number 13, May, 1996. She
can be reached by telephone (515) 472 1107, fax (515) 472 1123, or email:
cgorini@mum.edu

**Tony Hampson** is based in the Faculty of
International Education at
Cheltenham and Gloucester College of Higher Education, Cheltenham , Glos.,
England (Tel & Fax 01242 532877), where he advises on quality assurance
procedures relating to overseas programmes. He teaches mathematics within the
undergraduate programme in Cheltenham and also to teachers in Hong Kong as part
of the College's overseas In-Service BEd programme . His professional
interest lies in undergraduate curriculum development in Mathematics and, in
particular, the design and delivery of courses appropriate for intending
teachers.

**Fadia Harik** is a senior scientist at BBN Systems
and Technologies. Her
current work and research is in the area of mathematics teaching/learning from
a constructivist perspective with particular focus on classroom cultures. She
has written curricula for teacher education courses in
modern algebra and in dynamic geometry. She is currently directing an NSF
teacher enhancement project where a set of video case studies are being
developed for use by teachers and teacher educators to unravel the processes of
inquiry as well as the obstacles to inquiry in the mathematics classroom at the
middle school level. She can be reached by telephone (617) 873 3009, fax (617)
873 2455, and by email: fharik@bbn.com.

**Douglas Hofstadter** is a professor of cognitive
science at Indiana
University, with connections to several departments including Computer Science
and Psychology. A math major at Stanford, he did his Ph.D. in physics at the
University of Oregon. He explored number theory using computers in the early
1960's, and fell in love with "experimental mathematics". He never studied
geometry at all, but somehow fell in love with it purely on his own in 1992.
His love affair with Euclidean and other geometries (including Euclidual, its
dual with respect to the self-dual projective geometry), mediated in large part
through *Geometer's Sketchpad*, has been most ardent. He is deeply
involved with triangle centers and their complex interrelationships, and has
taught several courses on geometry and discovery, called "Circles and
Triangles: Diamonds of Geometry" (or "CaT:DoG"). He is working on a book on
these topics. Fax: (812) 855 6966; email:
dughof@cogsci.indiana.edu or
helga@cogsci.indiana.edu
(administrative assistant).

**R. Nicholas Jackiw** is a software designer at Key
Curriculum Press, where
he directs ongoing development of *The Geometer's Sketchpad* software and
print projects, and participates in other software development projects.
Jackiw's current research focus is on deploying dynamic geometry principles in
the area of student-constructed graphs and related visualizations of
quantitative
information. He may be reached at
njackiw@keypress.com.

**Zhonghong Jiang** is an assistant professor of
mathematics education and
computer education at Florida International University. His major research
area is the use of technology in mathematics curriculum and instruction.
Recent publications include "A Computer Microworld to Introduce Students to
Probability" (Jiang & Potter, 1994, in *The Journal of Computers in
Mathematics and Science Teaching*, Vol. 13, No. 2) and "A Brief Comparison
between the U. S. and Chinese Middle School Mathematics Curricula" (Jiang &
Eggleton, 1995, in *School Science and Mathematics*, Vol. 95, No.
4). He can be contacted by phone (305) 348
3790, fax (305) 348 2086, and e-mail:
jiangz@solix.fiu.edu.

**Michael Keyton** has been a teacher of mathematics
and music history at
St. Mark's School of Texas since 1977. He has contributed to several reference
works in music; he was an assistant to Nicolas Slonimsky in the production of
the 7th and 8th editions of *Baker's Biographical Dictionary of
Musicians*. In addition to his interests in mathematics and music, he was a
professional golfer for several years. He studied at Louisiana State University
(B.S., 1965; M.S., 1976), Indiana University (M.A., 1967), and the University
of North Texas (Ph.D., 1986). He is the author of *92 Geometric Explorations
on the TI-92* (Texas Instruments, 1996). His addresses are: 8580 Banff,
Dallas, TX 75243; email: mkeyton@tenet.edu.

**James King** has a Ph.D. in mathematics from the University of California at
Berkeley has been teaching at the University of Washington since 1975. Since
1991, Jim has been an organizer and instructor in the Park City Mathematics
Institute. His research areas include geometry of complex algebraic manifolds
and other areas of geometry. He began teaching geometry using computers about
ten years ago in a course based on problem-solving with *Logo*. Since
then he has become involved in the use of dynamic geometry software, writing,
teaching and organizing courses,
workshops, user groups and sessions for college and high school teachers. He is
author of *Geometry Through the Circle with The Geometer's Sketchpad*, Key
Curriculum Press, and is currently working on a dynamic geometry project on the
World Wide Web. Check out his web page:
http://www.math.washington.edu/~king.
He can be reached at the University of Washington, Box 354350, Seattle, WA
98195-4350, or by telephone (206) 543 1915, fax (206) 543 0397, or email:
king@math.washington.edu.

**Jean-Marie Laborde**, Research Director at CNRS, founded the Laboratoire
de Structures Discrètes et de Didactique (LSD^{2}) in 1982; this
is a research laboratory within IMAG. He graduated in Mathematics at
École Normale Supérieure in Paris in 1969. He earned a Ph.D.
(Thèse d'Etat) in computer science at the University of Grenoble in
1977. His work on the *Cabri* project began in 1981; it was originally
envisioned as an environment for graph theory. He has devoted his research
efforts to the use of geometric methods for the study of different classes of
graphs, especially hypercubes. He is currently involved with several of his PhD
students in new developments of *Cabri-géomètre.* He can be
reached at Laboratoire Leibniz - IMAG-Campus, Université Joseph Fourier
- CNRS, BP 53 38041 Grenoble cedex 9 FRANCE; by telephone (33) 76 51 46 10
(sec 76 51 46 16), fax 76 51 45 55, or email:
jean-marie.laborde@imag.fr.

**Stuart Levy** serves on the technical staff of the Geometry Center at the
University of Minnesota, and among other computer-related activities enjoys
programming for interactive computer graphics. He is one of the authors of the
Geometry Center's *Geomview* graphical software package. His phone is
(612) 624 1867, fax is (612) 625 8083, and prefers e-mail at
slevy@geom.umn.edu.

**Edwin McClintock**, professor of mathematics and computer education at
Florida International University in Miami, FL, is writing and testing units of
mathematics curriculum for middle school through graduate school utilizing
*Sketchpad* in the visualization process. This development relates
to a set of grants for which he is principal investigator or co-principal
investigator. His phone is (305) 348 2087, fax is (305) 348 3205, and e-mail
address is: mcclinto@solix.fiu.edu or
EDDMAC@aol.com.

**James Morrow**, who received his Ph. D. in functional analysis from
Florida State University under the direction of W. J. Stiles, directs Mount
Holyoke College's SummerMath program, along with his colleague and companion,
Charlene Morrow. He is currently working on ways that computer technology,
combined with reflection on problem solving, can be used to make sense of
mathematics. He enjoys traveling with his dynamic family and watching his
daughter, Hannah, learn and grow. He may be reached at SummerMath, Mount
Holyoke College, 50 College Street, South Hadley, MA 01075-1441, or by phone
(413) 538-2069, or email:
jmorrow@mhc.mtholyoke.edu.

**John Olive**, an associate professor of Mathematics Education at the
University of Georgia, Athens, has been working with students and teachers from
kindergarten through college for the past 28 years. He received his Ph.D. from
Emory University in 1985. He currently is co-director of two NSF-funded
projects: Project LITMUS, a five-year Teacher Enhancement Project, and a
research project investigating children's construction of fractions in the
context of computer microworlds. He is author of a chapter on teaching and
learning with *The Geometer's Sketchpad *in the book *New Directions in
Teaching and Learning Geometry*, Lawrence Erlbaum Associates, and also has
several journal articles on technology and school mathematics. Email
jolive@coe.uga.edu or find his web page at
http://jwilson.coe.uga.edu/olive/welcome.html.

**James M. Parks** is a professor of mathematics at SUNY-Potsdam, and is
currently a visiting lecturer for the MAA. Recent publications include
*Generic Topology*, McGraw-Hill, rev. 1994, and "On Proof and Dynamic
Software", *Math. in College J.*, CUNY (to appear). His current
interests are in geometry and applications of dynamic geometry software. His
email address is parksjm@potsdam.edu.

**Arnold Perham **is a teacher of mathematics and computer science at St.
Viator High School, 1213 E. Oakton St., Arlington Hts., IL, 60004. He is
particularly interested in using geometry construction software in an
experimental setting. He coauthored the text *Topics in Discrete Mathematics,
Computer Supported Problem Solving*, Addison-Wesley, 1993. He also
coauthored "Discrete Mathematics and Historical Analysis: A Study of Magellan,"
*Mathematics Teacher* 88, (February 1995), pp. 106-112. He can be reached
by telephone (847) 392 4050, ext. 226, fax (847) 392 4101, and email:
aep@svhs.viator.k12.us.

**Bernadette H. Perham**, until her death in April, 1996, was a professor in
the Department of Mathematical Sciences, Ball State University, Muncie,
Indiana. Her main interests included curriculum development and assessment.
She was president-elect of the Muncie Branch of the American Association of
University Women. In 1991, she received the Ball State University Outstanding
Faculty award. She coauthored the text *Topics in Discrete Mathematics,
Computer Supported Problem Solving*, Addison-Wesley, 1993 and also coauthored
"Discrete Mathematics and Historical Analysis: A Study of Magellan,"
*Mathematics Teacher* 88, (February 1995).

**Doris Schattschneider **has a Ph.D.
in mathematics from Yale University
and has taught at Moravian College for over 25 years. Her main research
interests are in discrete geometry, especially tiling, and in the visualization
of mathematical ideas. She was Senior associate on the Visual Geometry
Project, which included the development of the software *The Geometer's
Sketchpad*. She has led workshops for teachers at all levels on the use of
dynamic geometry software, and been active as co-organizer and presenter in
sessions on dynamic geometry. She is author of more than 40 articles and
several books, of which her favorite is *Visions of Symmetry: Notebooks,
Periodic Drawings, and Related Work of M.C. Escher*, W.H. Freeman. She is
the recipient of the MAA award for distinguished College or University Teaching
of Mathematics. Contact her at Moravian College, 1200 Main St., Bethlehem, PA
18018-6650, or by telephone (610) 861 1373, fax (610) 861 1462, or email:
schattdo@moravian.edu.

**Heinz Schumann** is senior lecturer in the Department of Mathematics and
Informatics at the Pedagogical University (PH) Weingarten, D-88250, Germany. He
is guest lecturer at the Technical University of Karlsruhe and was a visiting
lecturer at the University of Josef Fourier, Grenoble (France). He has written
several articles and books on geometry teaching and learning (with or without
computers), and has produced educational software. He introduced *Cabri
Géomètre* to German schools, teacher training institutions and
universities and with David Green (Loughborough University/England) coauthored
the book *Discovering Geometry - using Cabri Géomètre*. He
is guest editor of the *International Reviews on Mathematical Education
*(ZDM). His recent didactical research concerns computer algebra and the
use of computers in spatial geometry at secondary school level. Fax:
(49)75150200; e-mail:
schumann@ph-nov1.ph.fh weingarten.de

**Laurent Trilling** is professor of computer science at the
Université Joseph Fourier and head of the PLIAGE group (Programmation
Logique Intelligence Artificielle Génie Informatique) in the LSR
laboratory (Logiciel Système Réseau) of IMAG, both institutions
in Grenoble. His professional research interests include artificial
intelligence, constraint logic programming, and intelligent tutoring systems.
A recent publication is "Figure Correctness in an Expert System for Teaching
Geometry" and "Programmation géométrique, impérative et
logique" in *Journées francophones des langages applicatifs,
collection didactique*, INRIA (1996). His phone number is 33-76-82-72-13
and email address is trilling@imag.fr.