Use two terms interchangeably
You might try using the term
loop interchangeably with
Teacher: Connect the components into a complete loop.
in addition to
Teacher: Connect the components into a complete circuit.
This helps to emphasise the simple, closed geometry of electric circuits. It also fits nicely with talking about the
rope loop model for the electric circuit.
You might even explicitly move between discussing the
mechanical loop (the rope loop) and the
electrical loop (the circuit on the benchtop).
Consider renaming at least part of the entire topic
electrical loops rather than