1. This small group activity is designed to help students work out time dependent solutions for a particle on a ring.
  2. Students work in small groups with linear combinations of eigenstates of a quantum particle confined to a ring and calculate the probability for angular momentum, energy, and position as function of time.
  3. The whole class wrap-up discussion includes group presentations, allowing students to recognize time evolution of non-trivial quantum states in a variety of representations.

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