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The Geometric Supposer by Beth Wilson, Michal Yerushalmy, Judah L. Schwartz

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APPENDIX: A GUIDE TO THE GEOMETRIC SUPPOSER

The purpose of this appendix is twofold. For those readers who are acquainted with the Geometric Supposer, this appendix will refresh their memory as to the way the program looks and the way it operates. Those readers who have never had an opportunity to use any of the Supposer programs will find it useful to read this appendix as a brief introduction in order to help them make better sense of much of the discussion in the book.

THE ESSENTIAL IDEA OF THE SUPPOSER

There is a problem facing both the teacher and the learner of geometry. We need to work with diagrams when we deal with spatial matters. Any diagrams we make are, of necessity, specific. But the geometry we wish to teach and to learn deals ...

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