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Activity
University of Canterbury

Canterbury: The Konigsberg Bridge Problem

For Students 9th - 10th
An introduction to the Konigsberg Bridge problem and its relationship to network theory.
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Handout
Wolfram Research

Wolfram Math World: Spherical Geometry

For Students 9th - 10th Standards
Site provides a brief explanation of the discipline of Spherical Geometry along with many links to spherical geometry topics.