Grading isn’t as cut and dry as most people think. Sure, it’s fairly easy to assign the point value for a problem, and then decide what constitutes partial credit. However, when it comes to the actual grade.
For instance, what do you do if the majority of your students refuse to complete homework? The points become meaningless for those that do. The zeros drag down grades of otherwise succeeding students.
And what about the kid who gets a 14 on an exam? There’s no coming back from that one if the exam is weighted heavily.
As a math teacher, I am very aware of how much playing with numbers can change the results. After all, it is just statistics, and as Mark Twain said, “There are three types of lies: lies, damn lies and statistics.”
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