Do my literature review for me before I do this experiment:
ask students to write out a proof, then show them a marking rubric and ask them to mark their own proof. Compare against a normal marker's marking. Are the students' marks fair and reliable at all?
In reply to @christianp
Has anyone done this before? I've seen peer grading, but can't remember seeing self-marking for mathematical proofs. I reckon it's probably been done, though.
@sangwinc ?