Students are placed into small groups and asked to find the probability that an unknown quantum wave state $\vert \psi \rangle$ will leave an x,y, or z-oriented Stern-Gerlach analyzer in either the spin-up or spin-down state.

The probabilities can then be used to find the coefficients of the unknown wave state.

This process is repeated for all four unknown wave states on the Spins program, with each unknown wave state more challenging to find than the last.