I teach debugging in all my courses. The best systematic approach to give broken code to students, both in activities and on tests. Students are exposed to comm

I teach debugging in all my courses. The best systematic approach to give broken code to students, both in activities and on tests. Students are exposed to common errors for each and every topic. I collect examples of mistakes from previous years and from Stack Exchange. I also demonstrate how to debug. It is combination of making accidental mistakes during live coding and introducing intentional mistakes that I show how to identify and fix.