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Beem, Paul – 1998
Steiner's Porism states that if you can draw a connected ring of circles in the annular region between two original circles, the ring will be successfully completed no matter where you start. This paper explores how the TI-92 graphing calculator can be used to demonstrate Steiner's Porism and illustrate the main points of its proof. Inversion in…
Descriptors: Computer Uses in Education, Geometric Concepts, Geometry, Graphing Calculators
Beem, Paul – 1998
This paper introduces a teaching unit on using spiral symmetry in a geometry course for secondary education majors. The TI-92 graphing calculator is used to exploit the exponential function to analyze the geometric topic of similarity and to study the derivative of spirals. The paper provides some procedures and programs to generate spirals using…
Descriptors: Computer Uses in Education, Curriculum Development, Geometric Concepts, Geometry
