There are two ways to submit work completed in the handwriting student edition, depending on whether it is in a physical book or a printed page. Your child can either take a picture of their work in the app or upload a file.
If your child chooses to take a picture in the app, the camera application will open, and they can take a picture of their work and submit it within the app. This will work if your child is using a tablet or iPad.
If your child is using their physical student edition, then they can use a phone or other device to take a picture of the page, and it can be uploaded and turned in within the student application.
If your child is unable to do either of these, they can select “done” without completing this step. It's also recommended to check with their teacher is this is a requirement.