The Math Forum - Corner for Interactive Geometry Software

 CIGS = Corner for Interactive Geometry Software

Topics in Geometry
Sketchpad Users' Group

Don Shimamoto, Swarthmore College

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Return to MAA Meeting, 1994 - Sketchpad User Group
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Don taught a Topics in Geometry course for fifteen students this past fall. He used Greenberg's Non-Euclidean Geometry, and made extensive use of Sketchpad. Students completed fifteen to twenty Sketchpad projects, and used Sketchpad for homework. Don also used Sketchpad interactively in class in a mode in which he drove the program and students told him what to do in order to pursue their conjectures. He showed six sketches including some very interesting student work. Below are the notes taken from the six sketches.

inv = ref

Rotation?

Translation?

Pentagon

Euclidean and Hyperbolic Morley

 

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