Brasil Final Report - Department of Physics - The Ohio State University

34
to the right of the rightmost slit in the following ways: (1) with the original slit separation, d
(pretest) or (2) with half the original slit separation, d/2 (post-test). [See Figs. 2 and 7(a)
and 7(b).]
Students in introductory
calculus-based course
Pretest
before
tutorial
Post-test
after
tutorial
Graduate
students
Pretest
(N = 560) (N = 405) (N = 55)
distance between second and third slits d d/2 d
Point B (maximum for two slits)
correct 30% 80% 60%
with correct reasoning < 5% 40% 25%