I and anyone remotely teaching is in need of 16:9 aspect ratio size notebooks. There’s none supplied. The problem is with none 16:9 notebook sizes is the appearance of black frames from both sides.
This is the only reason I have to use Notability instead.
If you have a blank PDF with the right aspect ratio, you can import it to Goodnotes as a template:
If you want graph/lined/etc paper, you can generate it at
I’ve attached a couple of blank PDFs.