David W. Henderson, Department of Mathematics, Cornell University, Ithaca, NY 14853-4201, USA

Papers and Talks (see my Vita for a complete list of my publications)

• "Geometric Solutions of Cubic and Quadratic Equations", Pythagoras, 1994.
• (with D. Pimm) "Geometric Proofs and Knowledge Without Axioms", Proceedings, 1995 Annual Meeting of the Canadian Mathematics Education Study Group, Halifax, NS: Mount Saint Vincent University Press, 1995.
• "Geometric Proof and Knowledge Without Axioms At All Levels", Perspectives on the Teaching of Geometry for the 21st Century, Catania, Italy: University of Catania, 98-100, 1995.
• "Geometry from School to University: Professional Aspects", Plenary Address to the ICMI Study on Geometry: Perspectives on the Teaching of Geometry for the 21st Century , Catania, Italy: University of Catania, 1995.
• "Alive Mathematical Reasoning", Proceedings, 1996 Annual Meeting of the Canadian Mathematics Education Study Group, Halifax, NS: Mount Saint Vincent University Press, 27-33, 1996. A revised version is published as a chapter in Educational Transformations: Changing our lives through mathematics; A tribute to Stephen Ira Brown.  Editors: Francis A. Rosamond and Larry Copes. Bloomington, Indiana: AuthorHouse, 2006, pages 247-270.
• (with Jane-Jane Lo and Kelly Gaddis), "Building Upon Student Experiences in a College Geometry Course", For the Learning of Mathematics, 16, no. 2, 1996.
• "I learn mathematics from my students -- multiculturalism in action", For the Learning of Mathematics, 16, 34-40, 1996.
• (with D. Taimina) "Experiencing Geometry", NORMA-98, Nordic Mathematics Education Conference Proceedings, Kristiansand, Norway, 1998.
• "Giving Professors Permission to Change Their Teaching", Teaching Mathematics on the Undergraduate Level, International Commission on Mathematics Instruction Study Conference, Singapore, 1998.
• "Proof as a Convincing Communication that Answers -- Why?", Presented to the MAA Special Session on Proof in Mathematics Education, AMS-MAA Joint Meetings, San Antonio, January, 1999.
• "Square roots in the Sulba Sutra", Geometry at Work: Papers in Applied Geometry (editor, C. A. Gorini), MAA Notes Number 53, pp. 39-45, 2000.
• (with Daina Taimina) "Crocheting the Hyperbolic Plane"pdf-final version html-preliminary version, Mathematical Intelligencer, Vol. 23, No. 2, pp. 17-28, Spring 2001.
• "Differential Geometry", invited signed article for the new Encyclopaedia Britannica, accepted, due for publication 2003.
• "Review of Where Does Mathematics Come From by Lakoff and Nunez", Mathematical Intelligencer, Vol. 24, No. 1, Winter 2002, pp.75-78.
• "Review of Geometry: Euclid and Beyond by Robin Hartshorne", Bulletin of the A.M.S., 39 (October 2002), pg 563-571.
• Reflections of an educational mathematician:  How do we encourage real experiences with mathematics? August 16, 2003. Radio show guest speaker (1 hour) on show Math Medley hosted by Professor Patricia Kenschaft and net-broadcast at www.1100kfnx.com.
• (with Daina Taimina)"How to Use History to Clarify Common Confusions in Geometry", Chapter 6 in From Calculus to Computers: Using Recent History in the Teaching of Mathematics, editors A. Shell and D. Jardine, MAA Notes volume No.68, 2005, p.57-73.(MSWord document) (.PDF file)
• (with Daina Taimina)"Experiencing Meanings in Geometry", Chapter 3 in Aesthetics and Mathematics, (edited by David Pimm and M. Sinclair), Springer-Verlag. 2006, p.58-83.