I just did some more figuring, and ran into a different dilemma. In addition to my earlier posting, there's another problem. PLEASE help..
Anyway, let's say I had 8 assessments worth 48 total points. Some are 2 pointers, some are 10 pointers.
Using weights, I would think the fairest way to do this would be to take the total points possible and divide by the total points earned. (48/8) However, at times, some students do not turn in an assignment. In those cases, if it were a 10 point assignment, they might earn a zero.
With weights, the zero vastly outweighs several other assessments that might add up to 10, so just missing one 10 point assignment, if I give a zero, would blow out his weightings and skew his grade.
So, it would seem fairer for me to divide the number of actually handed in assessments by the number of possible points handed in. In this example, 38 possible points instead of 48. Then, when he DOES hand in the 10 pointer, I could again add in the additional 10 possible points.
This seems more fair because I want students to see what they are doing at any moment in time, not what their grade MIGHT be.
Has anyone solved this dilemma? For me, it is about educational philosophy as much as it is about math, so that's why I am asking it here in the general help section.