Hit a bug in class. If you already have the iPad app open as the student and then the teacher last minute creates an assignment, then the assignment doesn't show up EVEN WHEN THE STUDENT REFRESHES AND RESTARTS THE APP. There's some sort of bug that isn't letting it show up. This made it so that some of my students (who didn't have canvas already open) were able to turn in their assignment via the iPad in class, and others had to turn in by hand….