BL / PY : Display a simple, 'Hello World!', once on the Micro:bit display.
BL / PY : Change your script so that the message displays forever.
BL / PY : To be honest, it might be nice if you controlled what the micro:bit said - change your script so that it displays 'Hello World!' when you press button A, 'Goodbye Cruel World!' when you press button B.
PY : I'd rather not wait for each message to display before I view the next one - change the micropython script to stop the micro:bit waiting for the message to finish displaying.
PY : If you really fancy a challenge, try changing the script so that it speaks the messages (with the built in speech synthesiser) instead of displaying them!
PY : The speech is really quiet - add a smiley face on button A press and a sad face on button B - make sure that it displays before the speech starts!