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Q&A #5103

Teachers' Lounge Discussion: Grading policy

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From: Dan <danielfbailey@yahoo.com>
To: Teacher2Teacher Public Discussion
Date: 2007021616:50:16
Subject: Re: A simple suggestion



This method absolutely is a type of "average", its called a pooled
average.  It gives you the percentage of all the correct problems, 
instead of the mean of the percentages of the idividual tests. 
There's nothing "wrong" about it.  When students try to add fractions
this way (by summing the numerators and denominators) I show them that
this is not a sum, but rather a pooled average.  Like the baseball
example given.  

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