@russ_abbott
If the assignment submission experience isn't intuitive for students, they can use the Canvas Guides to help them navigate through their courses. We typically recommend and as a starting point.
Instructors use SpeedGrader to grade students' assignment submissions, as described in .
As to how students know: typically, schools provide students and instructors with introductions to Canvas and its features in the form of training and resources offered on their websites. Have you checked out the resources available at your school? I found a collection of links and guides at this page for instructors: Canvas | Cal State LA (you'll find the link to it on the Help button of your global navigation).
This discussion post is outdated and has been archived. Please use the Community question forums and official documentation for the most current and accurate information.