Using a basic buggy starter kit and a motor board, you can teach lots of basic concepts starting from simple sequencing through to hardware control, functions and radio controller by even coding a second microbit to act as a tilt controller to send signals to the microbit on the buggy.
Getting started code:
Getting started kit:
Or buy a combo kit for additional simplicity:
Or use an ice-cream tub as the buggy base and then you just need the motor board and the motor/wheels.
Quick-fire assembly is the name of the game here so using sticky double-sided tabs can save on time spent on small nuts/bolts.