[We, (Ohio State U) currently use Desire2Learn. We may switch to Canvas, so I am playing around with it.]]
For mathematics, it is hard for students to enter their work electronically [Word etc are just too cumbersome and hard to read, (La)TeX is too hard for college freshmen.]. I generally have students hand in their take-home quizzes on paper, but allow them to scan (or take a picture) and upload to a dropbox. Is it possible to do the same in Canvas?