Northwest to the Pole and Two-Headed Coins (Math Chat)
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|Frank Morgan; Christian Science Monitor|
|Suppose you start at the earth's equator and travel continuously northwest until you reach the North Pole. What does your path look like? How long is your path?|
|Levels:||Middle School (6-8), High School (9-12)|
|Resource Types:||Problems/Puzzles, Articles|
|Math Topics:||Elliptic & Spherical Geometry|
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