Word: nat
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...Nat Sci 1 a is not intended to be useful in providing a background for further math courses nor for competence in calculations necessary for science courses; it should not be taken to fulfil premed requirements...
...Nat Sci 5 as well, require familiarity with chemistry...
Fallacies in thinking have led to the conclusion of both the Biology Department and those professors teaching Chem 20, that Chem 6 is better preparation for Chem 20 than Nat Sci 3 with either Chem 40a or, now, Chem 5. Thus, a recent flyer entitled "Information for Freshmen Considering Concentration in Biology" states...
...initial meeting of Chem 20, Professor Doering stated that one in four students who fail to have the prerequisites as listed in the catalogue under Chem 20 (i.e., an A or A-in Nat Sci 3, an average of B-or better in Nat Sci 3 and Chem 40a, or a C or better in one semester of Chem 6) will earn a grade below C-in Chem 20 on the basis of previous years' data...
OBVIOUSLY, more capable science students and those students with stronger science backgrounds elect the more difficult science courses (i.e., Chem 6). Thus, it is not surprising that those students who have taken Nat Sci 3 do less well in Chem 20 than others. While one-fourth of those lacking the stated prerequisite for Chem 20 do lower than C-work in the course, it would be helpful to know first how that compares with other students enrolled in the course, and second, how well the other three-fourths of students without the prerequisites do. It would be especially interesting...