Electronic Proceedings of the Twentieth Annual International Conference on Technology in Collegiate Mathematics

San Antonio, Texas, March 6-9, 2008

Paper S075

This is an electronic reprint, reproduced by permission of Pearson Education Inc. Originally appeared in the Proceedings of the Twentieth Annual International Conference on Technology in Collegiate Mathematics, ISBN 0-321-64488-3, Copyright (C) 2009 by Pearson Education, Inc.


Exploring Polar Coordinates with Geometer's Sketchpad

Barbara K. D'Ambrosia


John Carroll University


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Carl R. Spitznagel


John Carroll University


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ABSTRACT

See a cardioid transformed into a circle or limaçon as you drag a slider to change a parameter. Help students understand why a polar rose has the number of petals that it does. With teacher-created demos in Geometer's Sketchpad, presenting ideas such as these is a snap!

Keyword(s): Geometer's Sketchpad, trigonometry