Crowdmark: Using and abusing. I . Grader

Crowdmark is a system of online grading students papers, which allows to do it in a more civilized way than the usual paper grading. It is useful for a large class, and especially useful when there are few graders.

I am not going to explain the obvious, but there are less known features.

The grader can put into comment 
  1.  a LaTeX code (surrounded by dollar signs) and it will be parsed (there are plenty limitations and some quirks too; also it is a rather known feature)
  2.  an emoji
  3. url like http://www.math.toronto.edu and it will become a clickable link
  4. image link <img src=”http://www.math.toronto.edu/cms/MathSite/images/math_logo_white.svg” > </img> and image appears
The grader cannot paste into comment 
  1. formatted (font, size, bold/italic/underlined… ) or colored text;
  2. graphics

To be continued with real hacks!–for owner (who prepares test)

Library
  1. Library of comments is not just an archive of the comments used, it is an integral part of the commenting process. Editing comment in the Library changes all instances of this comment on different booklets.
  2. Comments may be shared with other graders.
Cheating
  1. Unfortunately in the large classes cheating is now widespread. It was not so 20 years ago, but then I stopped giving homeworks which are graded (too much sharing) and now Quizzes go the same way.
  2. With Crowdmark cheaters are much more exposed: by default Crowdmark  graders grade booklets in the order of their numbers. Meanwhile, students with adjacent or close booklet numbers seat close to one another and sharing happens between neighbours. This means that the grader can easily spot too close similarities. 
  3. However, I do not want to catch cheaters, I want to prevent cheating and the best way to do it is to give multiversion quizzes and tests. I am discussing how to do it in my next post.

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