Here’s a quick way to help students understand where scales end and how LOTS (most?) of the songs they are learning move:

You wake up in the morning at home and you go to various places throughout the day, but you don’t move in with somebody else at the end of the day – you go back home!

Musical translation #1- when playing your scales you will end on the same note you started with.

Musical translation #2 – Songs often end on their key note. For example if a song is in the key of G Major its last note is typically G.