32834217_as___Arts___Sciences_Computing__What_you_need_to_know
[Why it matters] When you use the Assignments tool in Canvas, your students can submit their papers or other work online; you can then easily review, comment on, and grade their work through the SpeedGrader. Assignment basics About Assignments and Grading in Canvas [What you need to know] 
Collect and grade assignments online.
Things You Really Need to Know about Canvas | Arts & Sciences Computing
What you need to know