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Navigate [[..:..:..:activities:link|back to the activity]].

This is a marvelous activity, and one of the
[[http://www.physics.oregonstate.edu/~mcintyre/coriolis|
original centerpieces]] of the Paradigms Project.

An older version of this activity can be found
[[..:..:..:courses:activities:rfact:rfearthhockey|here]].