(You will need to remind students to go to View tab > 100% to see the file bigger/full size so it's easier to complete.)
Sites that convert PDF's to other file types:
https://dochub.com/pdf-editor (white out parts of a PDF and edit)
*Note - You can right click a PDF saved on your computer and try to open in Word. OR in Google Drive, you can right click a PDF and choose open with Google Docs. This will convert, but sometimes the formatting may not be correct due to graphics*
Students & Teachers should have PDF-XChange Viewer installed. Find in start menu.
Add text boxes, highlight, drawing, & more.