This is definitely doable, but the tasks seem quite simple and they only introduce single-qubit measurement and the X gate, while quantum state preparation usually involves some superposition and entanglement generation. One can get rid of the input superposition by measuring each qubit and then use a bunch of X gates to set each qubit to the right state, you don't even need the scratch qubit for two-qubit gates.
I am biased in my recommendation, but I would suggest taking a look at the Quantum Katas project. I created it to help people learn quantum computing; it has some nice tasks of varying complexity and (most importantly) test harnesses that verify that the task solutions are correct. The Superposition kata in particular introduces state preparation. We have had a lot of success using the katas to teach people unfamiliar with quantum computing.
