My Students have MacBook Airs. I give them assignments in PDF format and they complete them using Preview for Mac. It's the easy way I have found to write on PDFs. When I check the assignments, they all come through with the answers they type on the PDF. However, when I use the Canvas App for Ipads to check the assignments none of the annotations are shown. The first image is a screenshot from my IPAD the second one is the desktop version. I want to use the Ipad version because I can use my pen and it is easy to make notes with the Ipad pen. Any help will be highly appreciated.