First figure your homework grade.  Your HW percentage is your total
number of HW points divided by the number of HW points which are possible.
There are about 2000 possible HW points for the entire semester.  However, 
we will figure the final HW percentage out of only 1800 points (or about
90% of all possible points should the number of possible points change).  
You can't get more than 100% though, so once you have 1800 points you don't 
need to submit any more HW (although hopefully you will find the process of 
submission and feedback to be good practice for the tests).  There ended up
being 1995 HW points for the semester, and 1795 counts as 100%.

     Your MP gradebook ("My Scores") gives you your total MP points for
the year.  Add your scores on the written problems to this number; what 
results is your total number of HW points.  (NOTE: because of changes
made to the MP website immediately after our final exam, the total in 
My Scores is no longer correct; instead it is a now bit higher that your 
correct MP total which can still be found in the MP Grades file on our 
course webpage.) As an example, say you have earned 1502 MP points and 
78 points on the written problems.  Your total HW points for the semester 
would then be:

              1502 + 78 = 1580 total HW points

With 1580 HW points for the semester your HW percentage would be:

                      1580/1795  = 88.0%

HW is worth 8 points overall, so you would have earned 7.04 HW points
(i.e. 88.0% of 8)


     Now figure your CPS grade.  There are expected to be about 50 CPS
questions over the course of the semester, so the maximum possible CPS
score will be about 50 points.  The final CPS grade will be determined
as a percentage out of 45 points (or about 90% of all possible CPS points
should the number of possible CPS points change).  There ended up being
57 CPS questions, but we took 50 points (87.7%) as a 100% CPS score. 
Once again, you can't get more than 100%.  Say you have earned 41.7 CPS 
points for the semester.  Your CPS percentage would be

                       41.7/50.0 = 83.4%.

CPS is worth 5 points overall, so your CPS points for the semester are
4.17 (83.4% of 5).

     OK, now figure your recitation grade.  We grade quizzes out of 
20 points and we take your best 4 of 5 quizzes.  Say your best 4 quizzes 
total up to 59 points.  We grade group exercises out of 10 points and
we take your best 7 out of 8 group exercise.  Say your best 7 group
exercises total up to 64 points.  Your recitation average is 59 points
plus 64 points divided by the total recitation points possible, which
is 150 points (7 exercises plus 4 quizzes).  So your recitation average

                 (59+64)/150 = 82.0%

Your recitation grade is worth 7 points overall so your recitation 
points for the semester are 5.74 (82% of 7).

     Now figure your test total.  Take your best 4 tests and average
them and mutiply by 0.6.  For example, say your test grades are 79,
85, 83, 72, and 91.  Your test average is then

     (79+85+83+91)/4 = 84.5

We now multiply by .6 since the Tests are worth 60 points overall.

     84.5 times 0.6 = 50.7 

     OK, now you have your pre-exam total.

                 HW      7.04
                 CPS     4.17
                 QUIZ    5.74
                 TEST   50.70

                total   67.65

The pre-exam maximum is 80 points, so your pre-exam percentage is

           67.65/80 = 84.56%

     Will you be able to get an A?  That depends on what the final
grade scale is.  I start with no curve.  That is 

                 90 and above           A
                 80-90                  B
                 70-80                  C
                 60-70                  D
                 below 60               E

If the class average is 75 or higher, there is no change.  If the
class average falls below 75, I feel obliged to relax this scale
somewhat.  Look at 

                131 Spring 2007 web page , or
                131 Spring 2006 web page , or
                131 Spring 2005 web page , or
                131 Fall 2002 web page , or
                131 Spring 2002 web page , or
                131 Fall 2001 web page , or
                131 Fall 1999 web page 

to get an idea for what this year's scale might be.  I will make 
a guess at the final grade scale during the week before the exam, 
(please see the most recent histogram).  but the true final 
grade scale ultimately depends on overall class exam performance.

     Let's get back to our example.  You have 67.65 points going in
to the exam.  The exam is worth 20 so the best you can do is 87.65,
not enough to get an A if the class average is 75 or higher.  On
the other hand, you need at least 12.35 points from the exam to insure
yourself of a B.  The exam consists of 40 multiple choice questions,
so you need to get at least (12.35/20)*40 right, or 25 out of 40, to
insure yourself of a B. 

Thanks. GBA