1. This small group activity is designed to help students work out expectation values for a quantum particle confined to a ring.
  2. Students work in small groups with eigenstates of a quantum particle confined to a ring and calculate the expectation value for angular momentum and energy as a function of time.
  3. The whole class wrap-up discussion includes group presentations, allowing students to witness a variety of techniques in computing expectation values, and opens up a general conversation about quantum measurement.

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