Middle C is the note that we write on the first ledger line below the treble staff.
Example 1
Also, we can write middle C on the bass staff. We place it on the first ledger line above the staff.
Example 2
The notes from examples 1 and 2 are the same, they are just written differently.
Example 3
Congratulations! Go to the next lesson
Last lesson.
First ledger lines above and below the bass staff