Notability is a powerful and inexpensive iPad app for taking notes. Notability+DropBox provide a convenient and organized way to work on your homework paperlessly. Here I show you how it works:
1. Open the Math2b shared folder in Dropbox, select the homework, select the top-right "ARROW", select "Open in" by Notability.
2. In Notability, select create new note. Then you can work on the note directly by your hand. Use two fingers to scroll through a note.
3. If you need more space, I suggest you work on the second page. When you finish the homework, click the name of note and add the suffix of "Submission", so I will know this is your submission.
4. Export the note to the Math2b shared folder in your Dropbox by selecting the top-left "ARROW".