Lab Grading

Craig Fryhle (fryhle@u.washington.edu)
Fri, 27 Sep 1996 11:35:40 -0700 (PDT)

Greetings. I meant to get this in during today's lecture but forgot. The
breakdown for grading of lab report is as follows:

Prelab 10 points

Notes, observations,
discussion,
calculations,
conclusions, etc
(In-lab part) 15 points

Sample 5 points

Vial w/label 5 points

Assigned questions 5 points
-----------------------------------
Total 40 points

Sample grade is based on both yield and purity. There is often a tradeoff
in this regard. A highly pure product may be obtained in lower yield. A
low yield with low purity is a -/- situation. A low yield with high
purity may be a +/- (neutral)situation. A high yield with high purity is
a +/+ situation. Whether to repeat an experiment is up to you, based on
the number of points you think you would gain versus the additional
investment in time. For an average result it is probably not worth your
time to repeat the experiment, although the decision is yours to make.

All for now.

CBF

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Craig B. Fryhle, Ph.D. Office 206-535-8314 FAX 206-536-5055
Associate Professor Email fryhle@u.washington.edu
Department of Chemistry URL http://rainier.chem.plu.edu/fryhle.html
Pacific Lutheran University
Tacoma, Washington 98447 ^ ^ ^ ^ ^ ^
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