1. This kinesthetic activity is designed to introduce students to the geometric meaning of $|\Vec r - \Vec r'|$.
  2. Two students are asked to assume the roles of Kirk and Spock while the rest of the class must find a way to geometrically calculate the distance between the two Enterprise officers.
  3. The whole class discussion focuses on what the geometric meaning of $|\Vec r - \Vec r'|$ and why it is essential to have an agreed upon origin.

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