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.
• (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 in the forthcoming MAA volume Using Recent History in the Teaching of Mathematics. Publication expected in the fall 2004. (MSWord document) (.PDF file)
• (with Daina Taimina)"Experiencing Meanings in Geometry", a chapter in Aesthetics and Mathematics, a book under contract to Springer-Verlag. Publication expected Fall 2004.